Ignition off
Reconnect the connectors, reinstall components etc.
Test drive the car at an even speed (engine speed (RPM) above 2000 RPM) for at least 5 minutes
Release the accelerator pedal (AP) quickly at least three times to simulate fuel shut-off
Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S35894646432011121400000)

Fault-tracing information

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Checking fuel injection system

Check intake system for air leakage according to Check for air leaks in the intake system .

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check the exhaust system for leakage according to Checking for air leakage in the exhaust system .

Check fuel and residual pressure according to Checking fuel and residual pressures .

Check that the oil level is between the minimum and maximum markings

Check engine dilution by, reading off the short-term fuel trim with the engine running, plug the crankcase ventilation and read off the short-term fuel trim again, the value should be more or less unchanged

Remedy as necessary.

Was a fault detected?

YES Refer to «Verification»(ref-440276-S22627475872011121400000)
NO Refer to «Checking mass air flow (MAF) sensor»(ref-440276-S14477802862011121400000)

Checking mass air flow (MAF) sensor

Test drive the car for approximately 10 minutes

Read off the mass air flow (MAF) sensor correction factor. The value must be between 0.8 and 1.2

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

To replace mass air flow (MAF) sensor, see «Mass air flow sensor (MAF), replacing»(ref-461749-S37193842222012040200000) .

Continue Refer to «Verification»(ref-440276-S22627475872011121400000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

YES Refer to «Information»(ref-440276-S40440571052011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check intake system for air leakage according to Check for air leaks in the intake system .

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check the exhaust system for leakage according to Checking for air leakage in the exhaust system .

Check fuel and residual pressure according to Checking fuel and residual pressures .

Check that the oil level is between the minimum and maximum markings

Remedy as necessary.

Was a fault detected?

YES Refer to «Verification»(ref-440276-S02710576602011121400000)
NO Refer to «Checking mass air flow (MAF) sensor»(ref-440276-S00570186682011121400000)

Test drive the car for approximately 10 minutes

Read off the mass air flow (MAF) sensor correction factor. The value must be between 0.8 and 1.2

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

To replace mass air flow (MAF) sensor, see «Mass air flow sensor (MAF), replacing»(ref-461749-S37193842222012040200000) .

Continue Refer to «Verification»(ref-440276-S02710576602011121400000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

YES Refer to «Information»(ref-440276-S20031102772011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Lower limit

See Lower limit

Check the induction system for air leaks. See. Air leakage in the intake system, checking

HINT: Air leakage in the intake system can occur through the evaporative emission system (EVAP) valve, the secondary air solenoid valve and power brake booster.

Remedy as necessary.

Continue Refer to «Checking the fuel pressure and residual pressure in the workshop»(ref-440276-S22347677832011121400000)

Checking the fuel injection system

Test drive the car for approximately 10 minutes

Check the mass air flow (MAF) sensor. Read off its correction factor. The value should be between 0.8 and 1.2.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

See «Mass air flow (MAF) sensor, replacing»(ref-440269-S11593902572011121400000)

Scheme 98

Continue Refer to «Verification»(ref-440276-S42143465402011121400000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

YES Refer to «Information»(ref-440276-S00418421602011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Choosing a method for taking a reading

Note. For vehicles with demand activated fuel pumps (FP), see VIDA vehicle communication Quick test of fuel pump (FP). Requires Volvo scan tool.

The fuel pressure can be measured with the car stationary or while being driven. Residual pressure is measured with the car stationary.

When the car is being driven, see Taking fuel pressure readings while driving the car .

Continue Refer to «Measuring the line pressure»(ref-440276-S33942857752011121400000)

Scheme 99

Scheme 99: Measuring the line pressure

Connect the pressure gauge according to «Connecting fuel pressure gauge»(ref-461756-S26519938932012040200000)
Remove the soundproofing panel
Remove the fuel pump (FP) relay (CMI 12 in the passenger compartment)
Connect a cable to the relay base as illustrated. Read off the line pressure from the pressure gauge. The line pressure must be 375-395 kPa Check the residual pressure if the fuel pressure is OK. Remedy as necessary Other information For the location of and to replace the fuel pump (FP) relay, see «Central electronic module (CEM), replacing»(ref-461683-S35742770022012040200000) For the location of and to replace the fuel pump (FP), see «Right side fuel pump with level sensor»(ref-461660-S06738133512012040200000) See «Replacing the fuel filter»(ref-440269-S12446662822011121400000) To disconnect the pressure gauge, see «Disconnecting fuel pressure gauge»(ref-461756-S02817690252012040200000) .

Is the rest pressure to be checked?

YES Refer to «Checking the residual pressure»(ref-440276-S14420641892011121400000)
NO Refer to «Checking the fuel injection system»(ref-440276-S42437352342011121400000)

Checking the residual pressure

Switch off the ignition
Disconnect the cable between the terminals on the relay base
Reinstall the fuel pump (FP) relay. The line pressure must not fall below 200 kPa within 20 minutes of the fuel pump (FP) being shut-off. Remedy as necessary Other information See «Injector/pulse damper, replacement»(ref-440269-S41263058252011121400000) For the location of and to replace the fuel pump (FP) relay, see «Central electronic module (CEM), replacing»(ref-461683-S35742770022012040200000) For the location of and to replace the fuel pump (FP), see «Right side fuel pump with level sensor»(ref-461660-S06738133512012040200000) To disconnect the pressure gauge, see «Disconnecting fuel pressure gauge»(ref-461756-S02817690252012040200000) .

Continue Refer to «Checking the fuel injection system»(ref-440276-S42437352342011121400000)

Check intake system for air leakage according to Check for air leaks in the intake system .

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check fuel pressure according to Checking fuel and residual pressures .

Test drive the car for approximately 10 minutes

Check the mass air flow (MAF) sensor by read off its correction factors. The value should be between 0.8 and 1.2

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

To access/replace the mass air flow (MAF) sensor, see «Mass air flow sensor (MAF), replacing»(ref-461749-S37193842222012040200000) .

Continue Refer to «Verification»(ref-440276-S35101622422011121400000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

YES Refer to «Information»(ref-440276-S06325889202011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Upper limit

See Upper limit

Check intake system for air leakage according to Check for air leaks in the intake system .

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check the exhaust system for leakage according to Checking for air leakage in the exhaust system

Check fuel and residual pressure according to Checking fuel and residual pressures

Check that the oil level is between the minimum and maximum markings

Remedy as necessary.

Was a fault detected?

YES Refer to «Verification»(ref-440276-S23224371572011121400000)
NO Refer to «Checking mass air flow (MAF) sensor»(ref-440276-S35372218072011121400000)

Test drive the car for approximately 10 minutes

Read off the mass air flow (MAF) sensor correction factor. The value must be between 0.8 and 1.2.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

To replace mass air flow (MAF) sensor, see «Mass air flow sensor (MAF), replacing»(ref-461749-S37193842222012040200000) .

Continue Refer to «Verification»(ref-440276-S23224371572011121400000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

YES Refer to «Information»(ref-440276-S03645606112011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check intake system for air leakage according to Check for air leaks in the intake system .

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check the exhaust system for leakage according to Checking for air leakage in the exhaust system

Check fuel and residual pressure according to Checking fuel and residual pressures

Check that the oil level is between the minimum and maximum markings

Remedy as necessary.

Was a fault detected?

YES Refer to «Verification»(ref-440276-S16570519382011121400000)
NO Refer to «Checking mass air flow (MAF) sensor»(ref-440276-S11530283022011121400000)

Test drive the car for approximately 10 minutes

Read off the mass air flow (MAF) sensor correction factor. The value must be between 0.8 and 1.2.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

To replace mass air flow (MAF) sensor, see «Mass air flow sensor (MAF), replacing»(ref-461749-S37193842222012040200000) .

Continue Refer to «Verification»(ref-440276-S16570519382011121400000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

YES Refer to «Information»(ref-440276-S12539583812011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Lower limit

Checking for air leakage in the intake system

Check the induction system for air leaks. See. Air leakage in the intake system, checking

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Remedy as necessary.

Continue Refer to «Checking the fuel pressure and residual pressure in the workshop»(ref-440276-S24757963762011121400000)

Test drive the car for approximately 10 minutes

Check the mass air flow (MAF) sensor. Read off its correction factor. The value should be between 0.8 and 1.2.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

See «Mass air flow (MAF) sensor, replacing»(ref-440269-S11593902572011121400000)

Continue Refer to «Verification»(ref-440276-S23432726332011121400000)

Note. For vehicles with demand activated fuel pumps (FP), see VIDA vehicle communication Quick test of fuel pump (FP). Requires Volvo scan tool.

The fuel pressure can be measured with the car stationary or while being driven. Residual pressure is measured with the car stationary.

When the car is being driven, see Taking fuel pressure readings while driving the car .

Continue Refer to «Measuring the line pressure»(ref-440276-S00790018562011121400000)

Measuring the line pressure

Connect the pressure gauge according to «Connecting fuel pressure gauge»(ref-461756-S26519938932012040200000)
Remove the soundproofing panel
Remove the fuel pump (FP) relay (CMI 12 in the passenger compartment)
Connect a cable to the relay base as illustrated. Read off the line pressure from the pressure gauge. The line pressure must be 375-395 kPa Check the residual pressure if the fuel pressure is OK. Remedy as necessary Other information For the location of and to replace the fuel pump (FP) relay, see «Central electronic module (CEM), replacing»(ref-461683-S35742770022012040200000) For the location of and to replace the fuel pump (FP), see «Right side fuel pump with level sensor»(ref-461660-S06738133512012040200000) See «Replacing the fuel filter»(ref-440269-S12446662822011121400000) To disconnect the pressure gauge, see «Disconnecting fuel pressure gauge»(ref-461756-S02817690252012040200000) .

Is the rest pressure to be checked?

YES Refer to «Checking the residual pressure»(ref-440276-S35488369702011121400000)
NO Refer to «Checking the fuel injection system»(ref-440276-S27964953252011121400000)

Switch off the ignition
Disconnect the cable between the terminals on the relay base
Reinstall the fuel pump (FP) relay. The line pressure must not fall below 200 kPa within 20 minutes of the fuel pump (FP) being shut-off. Remedy as necessary Other information See «Injector/pulse damper, replacement»(ref-440269-S41263058252011121400000) For the location of and to replace the fuel pump (FP) relay, see «Central electronic module (CEM), replacing»(ref-461683-S35742770022012040200000) For the location of and to replace the fuel pump (FP), see «Right side fuel pump with level sensor»(ref-461660-S06738133512012040200000) To disconnect the pressure gauge, see «Disconnecting fuel pressure gauge»(ref-461756-S02817690252012040200000) .

Continue Refer to «Checking the fuel injection system»(ref-440276-S27964953252011121400000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

YES Refer to «Information»(ref-440276-S35712169542011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check intake system for air leakage according to Check for air leaks in the intake system .

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check fuel pressure according to Checking fuel and residual pressures

Test drive the car for approximately 10 minutes

Read off the mass air flow (MAF) sensor correction factor. The value must be between 0.8 and 1.2.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

To replace mass air flow (MAF) sensor, see «Mass air flow sensor (MAF), replacing»(ref-461749-S37193842222012040200000) .

Continue Refer to «Verification»(ref-440276-S15839785722011121400000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

YES Refer to «Information»(ref-440276-S05493890342011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Upper limit

Check the induction system for air leaks. Air leakage in the intake system, checking

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check the exhaust system for air leakage. Checking for air leakage in the exhaust system

Check the fuel pressure and residual pressure.

Check that the oil level is between the minimum and maximum markings

Remedy as necessary.

Continue Refer to «Checking mass air flow (MAF) sensor»(ref-440276-S01013659762011121400000)

Read off the mass air flow (MAF) sensor correction factor. The value must be between 2 and 12.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

See «Mass air flow (MAF) sensor, replacing»(ref-440269-S11593902572011121400000)

Continue Refer to «Verification»(ref-440276-S32145693512011121400000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

YES Refer to «Information»(ref-440276-S22672137172011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check the induction system for air leaks. Air leakage in the intake system, checking

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check the exhaust system for air leakage. Checking for air leakage in the exhaust system

Check the fuel pressure and residual pressure. See Checking fuel system pressure .

Check that the oil level is between the minimum and maximum markings

Remedy as necessary.

Continue See «Checking mass air flow (MAF) sensor»(ref-440276-S24387924462011121400000)

Checking fuel system pressure

Special tools T9995011 MANOMETER (FUEL PRESSURE) CI, LH, LE Tool number: T9995011 Tool description: MANOMETER (FUEL PRESSURE) CI, LH, LE Tool boards: T9989725 ADAPTER (-5011 CONNECTION TANK DRAINING UNIT) Tool number: T9989725 Tool description: ADAPTER (-5011 CONNECTION TANK DRAINING UNIT) Tool boards: T9995479 ADAPTER (CHECK-FUEL PRESSURE) Tool number: T9995479 Tool description: ADAPTER (CHECK-FUEL PRESSURE) Tool boards: T9812270 PUMP TROLLEY Tool number: T9812270 Tool description: PUMP TROLLEY Tool boards: T9812273 PUMP (UNLEADED) Tool number: T9812273 Tool description: PUMP (UNLEADED) Tool boards: T9812282 TANK(UNLEADED GASOLINE) Tool number: T9812282 Tool description: TANK(UNLEADED GASOLINE) Tool boards

Scheme 100

Scheme 100: Checking fuel system pressure

Scheme 101

Scheme 102

Check the fuel pressure see: Diagnostics, Vehicle communication, ECM, Parameters, Fuel pressure.

Absolute pressure: Fuel pressure in fuel system + air pressure.

Relative pressure: Fuel pressure in fuel system.

The air pressure is approx. 100 kPa at sea level. VIDA measures the fuel pressure in absolute pressure. External pressure gauge (pressure gauge) measures the fuel pressure in relative pressure.

Fuel line pressure. Specifications, mechanical

The following method must be used when reading the fuel line pressure on the fuel rail

Scheme 103

Engagement of fuel pressure gauge.

Supplement the pressure gauge with adapter and nipple before use.

«9995011»(ref-403953-S13051471402011061000000)
«9989725»(ref-403953-S30652708112011061000000)
«9995479»(ref-403953-S17462459562011061000000)

Connect the adapter to the valve on the fuel rail in the locked position (image 1, valve closed).

Set the cock on the pressure gauge in the direction of the nipple.

9995479

Connect the pressure gauge's other connection to the fuel drain equipment.

«9812270»(ref-403953-S06137301002011061000000)
«9812273»(ref-403953-S13586864282011061000000)
«9812282»(ref-403953-S26175172122011061000000)

Unlock the adapter (graphic 2, valve open).

Start the engine.

Read off the relative pressure.

Scheme 104

Disengagement of fuel pressure gauge.

Ignition off.

Start the draining unit.

Set the cock on the pressure gauge to the central position.

Secure the adapter (image 1, valve closed).

Remove the adapter from the valve.

Stop the draining unit.

Reset the equipment.

Read off the mass air flow (MAF) sensor correction factor. The value must be between 2 and 12.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

See «Mass air flow (MAF) sensor, replacing»(ref-440277-S28735102532011121400000)

Continue See «Verification»(ref-440276-S17350226852011121400000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

YES Refer to «Fault-tracing information»(ref-440276-S05553294812011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check the induction system for air leaks.

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check the exhaust system for air leakage.

Checking fuel and residual pressure.

Check that the oil level is between the minimum and maximum markings

Remedy as necessary.

Other information

See «Checking for air leakage in the intake system»(ref-440270-S16938554362011121400000)
See «Checking for air leakage in the exhaust system»(ref-461753-S22407718952012040200000)

Continue Refer to «Checking mass air flow (MAF) sensor»(ref-440276-S04979358002011121400000)

Read off the mass air flow (MAF) sensor correction factor. The value must be between 2 and 12.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

See «Replacing the mass air flow (MAF) sensor»(ref-440269-S31487207622011121400000)

Continue Refer to «Verification»(ref-440276-S18509537962011121400000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

YES Refer to «Information»(ref-440276-S03049406122011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check the induction system for air leaks.

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check the exhaust system for air leakage.

Checking fuel and residual pressure.

Check that the oil level is between the minimum and maximum markings

Remedy as necessary.

Other information

See «Air leakage in the intake system, checking»(ref-440268-S00922598552011121400000)
See «Checking for air leakage in the exhaust system»(ref-461753-S22407718952012040200000)
See «Fuel system pressure, checking»(ref-440278-S14988253002011121400000)

Continue Refer to «Checking mass air flow (MAF) sensor»(ref-440276-S29559285802011121400000)

Read off the mass air flow (MAF) sensor correction factor. The value must be between 2 and 12.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

See «Replacing the mass air flow (MAF) sensor»(ref-440269-S31487207622011121400000)

Continue Refer to «Verification»(ref-440276-S26085367702011121400000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

YES Refer to «Information»(ref-440276-S24506881402011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Lower limit

Check the induction system for air leaks.

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Check the exhaust system for air leakage.

Checking fuel and residual pressure.

Check that the oil level is between the minimum and maximum markings

Remedy as necessary.

Other information

See «Checking for air leakage in the intake system»(ref-440270-S16938554362011121400000)
See «Checking for air leakage in the exhaust system»(ref-461753-S22407718952012040200000)
See «Fuel system pressure, checking»(ref-440278-S29275260972011121400000)

Continue Refer to «Checking mass air flow (MAF) sensor»(ref-440276-S34334923202011121400000)

Read off the mass air flow (MAF) sensor correction factor. The value must be between 2 and 12.

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

See «Replacing the mass air flow (MAF) sensor»(ref-440269-S31487207622011121400000)

Continue Refer to «Verification»(ref-440276-S17005480002011121400000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

YES Refer to «Information»(ref-440276-S16152506722011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check intake system for air leakage according to Check for air leaks in the intake system .

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Start the engine and idle it for 10 minutes.

Check the mass air flow (MAF) sensor by read off its correction factors. The value should be between 2 and 12

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

To replace mass air flow (MAF) sensor, see «Mass air flow sensor (MAF), replacing»(ref-461749-S37193842222012040200000) .

Continue Refer to «Verification»(ref-440276-S00021261772011121400000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

YES Refer to «Information»(ref-440276-S24486362042011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check intake system for air leakage according to Check for air leaks in the intake system .

HINT: Air leakage in the intake system can occur through the canister purge (CP) valve, the secondary air solenoid valve and power brake booster.

Start the engine and idle it for 10 minutes.

Check the mass air flow (MAF) sensor by read off its correction factors. The value should be between 2 and 12

Note. There must not be any air leakage when this test is carried out.

Remedy as necessary.

Other information

To replace mass air flow (MAF) sensor, see «Mass air flow sensor (MAF), replacing»(ref-461749-S37193842222012040200000) .

Continue Refer to «Verification»(ref-440276-S07922453042011121400000)

Test drive the car according to the TRIP schedule, see Verifying repairs .

Do not turn off engine after test drive.

Connect the car to VIDA again.

Read off fuel trim status.

There should not be any faults when fuel trim is finished.

Was a fault detected?

YES Refer to «Information»(ref-440276-S04002866332011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Upper limit

See Fault-tracing information

See Lower limit

See Upper limit

See Lower limit

See Upper limit

Checking the component

WARNING

Engine cooling fan (FC) can also operate if the ignition is switched off when this diagnostic trouble code (DTC) is stored.

HINT: To avoid injury, disconnect the power supply to the engine cooling fan (FC) during fault-tracing.

Check the connector on the engine coolant temperature (ECT) sensor. Check for contact resistance and oxidation. This diagnostic trouble code (DTC) is stored if the engine coolant temperature (ECT) sensor freezes. This may happen if the coolant level is low or there is too little glycol in the coolant. Check the engine coolant level and its freezing point. HINT: The diagnostic trouble code (DTC) can be caused by a thermostat that doesn't open. Replace the engine coolant temperature (ECT) sensor if the above does not remedy the fault. Remedy as necessary. Other information See «Temperature sensor engine coolant, replacing»(ref-461758-S26261417092012040200000) See «Contents»(ref-440209-S18666729612011121400000)

Continue Refer to «Verification»(ref-440276-S19610386422011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Scheme 105

Scheme 105: Verification

Ignition off
Reconnect the connectors, reinstall components etc.
Ignition on
Read off the engine coolant temperature (ECT) sensor.

Is the temperature within its permitted range?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S41999023582011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Checking engine coolant temperature (ECT)

Fault-tracing must begin with the engine cold (+20 °C) so that the engine coolant temperature (ECT) sensor can be tested over as wide a temperature range as possible
Switch off the climate control system
Start the engine. Read off the engine coolant temperature (ECT). Check that the engine coolant temperature (ECT) is within its permitted range and corresponds with the engine warming up.

Is the temperature within its permitted range?

YES Refer to «Checking thermostat»(ref-440276-S11537666472011121400000)
NO Refer to «Replacing the component»(ref-440276-S31526887822011121400000)

Checking thermostat

Start the engine. Run the engine until the engine coolant temperature (ECT) reaches approximately 100 °C
Activate the engine cooling fan (FC) with the engine running
Wait approximately 90 seconds and then shut-off the engine cooling fan (FC). Read off the engine coolant temperature (ECT). If the temperature is 85 °C or lower when the fan stops, the thermostat is damaged.

Is the temperature lower than 86 °C?

YES Refer to «Replacing the component»(ref-440276-S18758611982011121400000)
NO FAULT TRACING FAILED: The fault should have been detected and remedied. As this is not the case fault-tracing has failed. Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Replacing the component

Try a new thermostat

See Thermostat, replacing

Scheme 106

Scheme 106: Replacing the component

Try a new engine coolant temperature (ECT) sensor

See Temperature sensor engine coolant, replacing

Continue Refer to «Verification»(ref-440276-S26911974502011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect the connectors, reinstall components etc.
Ignition on
Read off the engine coolant temperature (ECT) sensor.

Is the temperature within its permitted range?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S13084290922011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Lower limit

See Upper limit

Fault-tracing

See Fault-tracing

Fault-tracing must begin with the engine cold (+20 °C) so that the engine coolant temperature (ECT) sensor can be tested over as wide a temperature range as possible
Switch off the climate control system
Start the engine. Read off the engine coolant temperature (ECT). Check that the engine coolant temperature (ECT) is within its permitted range and corresponds with the engine warming up.

Is the temperature within its permitted range?

YES Refer to «Checking thermostat»(ref-440276-S42250569122011121400000)
NO Refer to «Replacing the component»(ref-440276-S21296754802011121400000)

Start the engine. Run the engine until the engine coolant temperature (ECT) reaches approximately 100 °C
Activate the engine cooling fan (FC) with the engine running
Wait for approximately 90 seconds. Then switch off the engine cooling fan (FC). Read off the engine coolant temperature (ECT). If the temperature is 85 °C or lower when the fan stops, the thermostat is damaged.

Is the temperature lower than 86 °C?

YES Refer to «Replacing the component»(ref-440276-S42186995322011121400000)
NO FAULT TRACING FAILED: The fault should have been detected and remedied. As this is not the case fault-tracing has failed. Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Try a new thermostat

See Thermostat, replacing

Try a new engine coolant temperature (ECT) sensor

See Temperature sensor engine coolant, replacing

Continue Refer to «Verification»(ref-440276-S39866170532011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect the connectors, reinstall components etc.
Ignition on
Read off the engine coolant temperature (ECT) sensor.

Is the temperature within its permitted range?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S05220179762011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect the connectors, reinstall components etc.
Ignition on
Read off the engine coolant temperature (ECT) sensor.

Is the temperature within its permitted range?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S32252277382011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect the connectors, reinstall components etc.
Ignition on
Read off the engine coolant temperature (ECT) sensor.

Is the temperature within its permitted range?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S03070315022011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Checking the connector

WARNING

Before fault-tracing can begin, the engine cooling fan (FC) connector must be disconnected to prevent the engine cooling fan (FC) engaging. A diagnostic trouble code (DTC) for the engine cooling fan (FC) control module may be stored. After fault-tracing the connector must be reconnected.

Ignition off
Check the connector on the engine coolant temperature (ECT) sensor. Check for contact resistance and oxidation
Reinstall the components, reconnect the connectors etc.
Ignition on
Read off the engine coolant temperature (ECT) sensor. If the temperature is now within its permitted range, the fault was caused by poor contact in the connector. Other information See «Temperature sensor engine coolant, replacing»(ref-461758-S26261417092012040200000) See «Contents»(ref-440209-S18666729612011121400000)

Is the temperature within its permitted range?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking the wiring and component»(ref-440276-S39326710122011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect the connectors, reinstall components etc.
Ignition on
Read off the engine coolant temperature (ECT) sensor.

Is the temperature within its permitted range?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S16248472892011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

WARNING

Ignition off
Check the connector on the engine coolant temperature (ECT) sensor. Check for contact resistance and oxidation
Reinstall the components, reconnect the connectors etc.
Ignition on
Read off the engine coolant temperature (ECT) sensor. If the temperature is now within its permitted range, the fault was caused by poor contact in the connector. Other information See «Temperature sensor engine coolant, replacing»(ref-461758-S26261417092012040200000) See «Contents»(ref-440209-S18666729612011121400000)

Is the temperature within its permitted range?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking the wiring and component»(ref-440276-S35319698882011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect the connectors, reinstall components etc.
Ignition on
Read off the engine coolant temperature (ECT) sensor.

Is the temperature within its permitted range?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S17104075162011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Fault-tracing

Checking the status

Check whether the fault is permanent or intermittent by reading off the signal from the engine coolant temperature (ECT) sensor.

Note. In order for the correct values to be shown, reading of the temperatures must take place at the moment of start.

Start the engine.

Check that the engine temperature is reasonable.

The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.

HINT: Remove the engine temperature sensor, but leave the connector in place. Leave the engine hood open, then the engine temperature sensor shall show the same temperature as outdoor temperature.

Continue Refer to «Checking the component and wiring»(ref-440276-S14362679582011121400000)

Scheme 107

Scheme 107: Checking the component and wiring

Scheme 108

Scheme 109

Ignition off.
Unplug the engine temperature sensor connectors. NOTE: The contact is gold-plated which requires the greatest care to not damage the contact, making it unusable.
Check the connectors. Check for loose connections. Check for contact resistance. Check for oxidation. Check the engine temperature sensor's resistance between #1 and #2 (against the sensor). Remedy as necessary. Other information See «Connecting the breakout box»(ref-440211-S03702023042011121400000) See «Signal specification»(ref-440214-S33124753252011121400000) See «Component specifications»(ref-461750-S34427939622012040200000) See «Temperature sensor engine coolant, replacing»(ref-461758-S26261417092012040200000) See «Checking wiring and terminals»(ref-440209-S33835172972011121400000)

Continue Refer to «Verification»(ref-440276-S13619584882011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect the connectors, reinstall components etc.
Ignition on. Read off the engine coolant temperature (ECT) sensor signal. Check that the signal is within its permitted range.

Is the value OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S40140530562011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Fault-tracing

See Fault-tracing information

Ignition on. Check whether the fault is permanent or intermittent by reading off the signal from the fuel pressure sensor. With the engine at operating temperature and idling, the signal must be approximately 400 kPa. The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.

Continue Refer to «Checking components and wiring»(ref-440276-S07736949312011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Reinstall the connectors, components etc.
Start the engine and run it to normal operating temperature
Read off the fuel pressure sensor signal. Check that the fuel pressure is approximately 400 kPa with the engine idling at operating temperature.

Is the fuel pressure correct?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S40938431302011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-440264-S06906222842011121400000) . NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the front heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S28029877462011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Faulty signal. Permanent fault

See Faulty signal. Permanent fault

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Signal missing. Intermittent fault

See Signal missing. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Start the engine and let it idle for a maximum of 5 minutes. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S02150288742011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Signal missing. Permanent fault

See Signal missing. Permanent fault

Checking for air leakage in the exhaust system

Check for air leakage. See Checking for air leakage in the exhaust system .

Remedy as necessary.

Scheme 110

Scheme 110: Checking for air leakage in the exhaust system

Was there any air leakage?

YES Refer to «Verification»(ref-440276-S00168975752011121400000)
NO Refer to «Checking components and wiring»(ref-440276-S35743021812011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect the connectors. Reinstall the components
Test drive the car according to the TRIP schedule. See «Verifying repairs»(ref-440264-S06906222842011121400000) . Connect VIDA again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking components and wiring»(ref-440276-S32151627932011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect the connectors, reinstall components etc.
Test drive the car according to the TRIP schedule. See «Verifying repairs»(ref-440264-S06906222842011121400000) . Connect VIDA again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S11194876562011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Signal too high

See Signal too high

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Signal too low. Intermittent fault

See Signal too low. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-440264-S06906222842011121400000) . NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the front heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The value should be higher than 1.0.

Is the value higher than 1.0?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S32142545502011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Signal too low. Permanent fault

See Signal too low. Permanent fault

Ignition on. Check whether the fault is permanent or intermittent by reading off the signal from the fuel pressure sensor. With the engine at operating temperature and idling, the signal must be approximately 400 kPa. The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.

Continue Refer to «Checking components and wiring»(ref-440276-S26306005002011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Reinstall the connectors, components etc.
Start the engine and run it to normal operating temperature
Read off the fuel pressure sensor signal. Check that the fuel pressure is approximately 400 kPa with the engine idling at operating temperature.

Is the fuel pressure correct?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S06277705932011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Ignition on. Check whether the fault is permanent or intermittent by reading off the signal from the fuel pressure sensor. With the engine at operating temperature and idling, the signal must be approximately 400 kPa. The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.

Continue Refer to «Checking components and wiring»(ref-440276-S41732926282011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Reinstall the connectors, components etc.
Start the engine and run it to normal operating temperature
Read off the fuel pressure sensor signal. Check that the fuel pressure is approximately 400 kPa with the engine idling at operating temperature.

Is the fuel pressure correct?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S08282543232011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Faulty signal

See Faulty signal

Signal too low

See Signal too low

Control module previously registered a fault. The fault is now no longer present.

Continue Refer to «Information»(ref-440276-S40285086512011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Faulty signal. Intermittent fault

Ignition off. The control module has registered a fault in the heated oxygen sensor (HO2S). Try a new heated oxygen sensor (HO2S). See «Heated oxygen sensor (HO2S), replacing»(ref-461749-S04698377542012040200000) .

Continue Refer to «Information»(ref-440276-S39552704442011121400000)

In case of this defect, troubleshooting is not followed by verification.

The information can be displayed again or the fault-tracing for this fault can be interrupted.

See Faulty signal. Permanent fault

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal missing. Intermittent fault

Ignition off
Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation
Reinstall the components, reconnect the connectors etc.
Start the engine. Allow the engine to idle. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S). The text NOT READY is displayed if the diagnostic is still running. Other information To access or replace the heated oxygen sensor (HO2S), see «Heated oxygen sensor (HO2S), replacing»(ref-461749-S04698377542012040200000) For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) . See «Contents»(ref-440209-S18666729612011121400000) .

Is FAULT NOT DETECTED displayed?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking components and wiring»(ref-440276-S27991488402011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reinstall components, reconnect connectors etc.
Start the engine and let it idle. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S02215424102011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal missing. Permanent fault

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Signal too high. Intermittent fault

See Signal too high. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reinstall components, reconnect connectors etc.
Start the engine and let it idle. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S42217518932011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Signal too high. Permanent fault

See Signal too high. Permanent fault

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal too low. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reinstall components, reconnect connectors etc.
Start the engine and let it idle. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S29423086942011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too low. Permanent fault

See Faulty signal. Intermittent fault

See Faulty signal. Permanent fault

See Signal missing. Intermittent fault

Ignition off
Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation
Reinstall the components, reconnect the connectors etc.
Start the engine. Allow the engine to idle. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S). The text " NOT READY" is displayed if the diagnosis is running. Other information See «Contents»(ref-440209-S18666729612011121400000) To access or replace the heated oxygen sensor (HO2S), see «Replacing lambda probes»(ref-461749-S07123892362012040200000) For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S19056685512011121400000) For information about signals on 6 cylinder engines, see «Signal specification»(ref-440279-S30114162992011121400000) .

Is "FAULT NOT DETECTED" displayed?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking components and wiring»(ref-440276-S17872469962011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the components, reconnect the connectors etc.
Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-440264-S06906222842011121400000)
Do not switch off the engine after the test drive
Connect the car to VIDA again. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S)
There must not be any faults when the diagnostic is complete.

Was a fault detected?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S20920747192011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too high. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the components, reconnect the connectors etc.
Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-440264-S06906222842011121400000)
Do not switch off the engine after the test drive
Connect the car to VIDA again. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S)
There must not be any faults when the diagnostic is complete.

Was a fault detected?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S23423642702011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too low. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the components, reconnect the connectors etc.
Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-440264-S06906222842011121400000)
Do not switch off the engine after the test drive
Connect the car to VIDA again. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S)
There must not be any faults when the diagnostic is complete.

Was a fault detected?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S07168827842011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Checking the fuel pressure sensor

Note. If diagnostic trouble codes (DTC) for the fuel pressure sensor or atmospheric pressure sensor are stored, these diagnostic trouble codes (DTC) must be fault-traced and remedied first.

HINT: The method below is used to check whether the diagnostic trouble code (DTC) was caused by a faulty fuel pressure sensor. This can be done by comparing the fuel pressure sensor signal (displayed in VIDA) with the actual fuel pressure (displayed on a manometer connected to the wiring for the fuel injection system). This method assumes that the manometer for measuring fuel pressure is correctly calibrated.

To connect the manometer, see «Fuel pressure gauge»(ref-461756-S20486606572012040200000)
Run the engine to operating temperature. Allow the engine to idle
air conditioning (A/C) off
Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, the circuit for the fuel pressure sensor is defective.

Are the values equal?

YES Refer to «Checking components»(ref-440276-S06236424812011121400000)
NO Refer to «Checking components and wiring»(ref-440276-S12251627972011121400000)

Checking components

Check that the fuel level in the tank is not too low (almost no fuel).

Check the connectors between the pump control module and the fuel pump (FP). Check for contact resistance and oxidation.

Check the fuel lines and fuel filter for blockage and leaks.

Remedy as necessary.

Try a new fuel pump (FP) if no fault is found during the above fault-tracing.

HINT: The diagnostic trouble code (DTC) can also be caused by a defective pump control module.

Other information

See «Contents»(ref-440209-S18666729612011121400000)
To access or replace the fuel pump (FP), see «Level sensor, fuel tank/fuel pump, replacement»(ref-440269-S09736277772011121400000)
To access or replace the pump control module see «Control module fuel pump (FP), replacing»(ref-440263-S25097834532011121400000) .

Continue Refer to «Verification»(ref-440276-S28077918122011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Reinstall the connectors, components etc.
Start the engine and run it to normal operating temperature
Read off the fuel pump (FP) load. Check that the engine starts and that the signal is approximately 35% (±5%) when the engine is idling at operating temperature.

Is the function correct?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S16840353982011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check for air leakage. See Checking for air leakage in the exhaust system .

Remedy as necessary.

Was there any air leakage?

YES Refer to «Verification»(ref-440276-S31530028402011121400000)
NO Refer to «Checking components and wiring»(ref-440276-S40637735852011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect the connectors. Reinstall the components
Test drive the car according to the TRIP schedule. See «Verifying repairs»(ref-440264-S06906222842011121400000) . Connect VIDA again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking components and wiring»(ref-440276-S08980943432011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect connectors, reinstall components etc.
Test drive the car according to the TRIP schedule. See «Verifying repairs»(ref-440264-S06906222842011121400000) . Connect VIDA again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S21195583752011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check for air leakage. See Checking for air leakage in the exhaust system .

Remedy as necessary.

Was there any air leakage?

YES Refer to «Verification»(ref-440276-S05850221842011121400000)
NO Refer to «Checking components and wiring»(ref-440276-S34935272522011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect the connectors. Reinstall the components
Test drive the car according to the TRIP schedule. See «Verifying repairs»(ref-440264-S06906222842011121400000) . Connect VIDA again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking components and wiring»(ref-440276-S27318382712011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect connectors, reinstall components etc.
Test drive the car according to the TRIP schedule. See «Verifying repairs»(ref-440264-S06906222842011121400000) . Connect VIDA again and read out the difference between the front and rear heated oxygen sensors (HO2S). The value must be lower than +/-0.01.

Is the value lower than +/- 0.01?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S16049265412011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too high

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Faulty signal. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

{Ignition off.
Reconnect connectors, reinstall components.
Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-440264-S06906222842011121400000) . NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the front heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S36015193422011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Faulty signal. Permanent fault

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal missing. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Start the engine and let it idle for a maximum of 5 minutes. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S16076876962011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal missing. Permanent fault

See Signal too high

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal too low. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-440264-S06906222842011121400000) . NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the front heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The value should be higher than 1.0.

Is the value higher than 1.0?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S09687684442011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too low. Permanent fault

Note. If diagnostic trouble codes (DTC) for the fuel pressure sensor or atmospheric pressure sensor are stored, these diagnostic trouble codes (DTC) must be fault-traced and remedied first.

HINT: The method below is used to check whether the diagnostic trouble code (DTC) was caused by a faulty fuel pressure sensor. This can be done by checking whether the fuel pressure sensor signal (displayed in VIDA) is unstable, while the actual fuel pressure (displayed on a manometer connected to the wiring for the fuel injection system) is stable.

To connect the manometer, see «Fuel pressure gauge»(ref-461756-S20486606572012040200000)
Run the engine to operating temperature. Allow the engine to idle
air conditioning (A/C) off
Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check the value on the manometer and the value displayed in VIDA. If the fuel pressure sensor signal (displayed in VIDA) is unstable while the actual fuel pressure (displayed on the manometer connected to the wiring for the fuel injection system) is stable, this indicates that the circuit for the fuel pressure sensor is defective.

Are the values equal?

YES Refer to «Checking components»(ref-440276-S26839136502011121400000)
NO Refer to «Checking components and wiring»(ref-440276-S36554255942011121400000)

Check that the fuel level in the tank is not too low (almost no fuel).

Check the connectors between the pump control module and the fuel pump (FP). Check for contact resistance and oxidation.

Check the fuel lines and fuel filter for blockage and leaks.

Remedy as necessary.

Try a new fuel pump (FP) if no fault is found during the above fault-tracing.

HINT: The diagnostic trouble code (DTC) can also be caused by a defective pump control module.

Other information

See «Checking wiring and terminals»(ref-440209-S33835172972011121400000)
See «Level sensor, fuel tank/fuel pump, replacement»(ref-440269-S09736277772011121400000)
See «Control module fuel pump (FP), replacing»(ref-440263-S35320384212011121400000)

Continue Refer to «Verification»(ref-440276-S01641313242011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Connect the manometer, see «Fuel pressure gauge»(ref-461756-S20486606572012040200000)
Run the engine to operating temperature. Allow the engine to idle
air conditioning (A/C) off
Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, this indicates incorrect function.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S38368478552011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Note. If diagnostic trouble codes (DTC) for the fuel pressure sensor or atmospheric pressure sensor are stored, these diagnostic trouble codes (DTC) must be fault-traced and remedied first.

To connect the manometer, see «Fuel pressure gauge»(ref-461756-S20486606572012040200000)
Run the engine to operating temperature. Allow the engine to idle
air conditioning (A/C) off
Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check the value on the manometer and the value displayed in VIDA. If the fuel pressure sensor signal (displayed in VIDA) is unstable while the actual fuel pressure (displayed on the manometer connected to the wiring for the fuel injection system) is stable, this indicates that the circuit for the fuel pressure sensor is defective.

Are the values equal?

YES Refer to «Checking components»(ref-440276-S35053646072011121400000)
NO Refer to «Checking components and wiring»(ref-440276-S11933100482011121400000)

Check that the fuel level in the tank is not too low (almost no fuel).

Check the connectors between the pump control module and the fuel pump (FP). Check for contact resistance and oxidation.

Check the fuel lines and fuel filter for blockage and leaks.

Remedy as necessary.

Try a new fuel pump (FP) if no fault is found during the above fault-tracing.

HINT: The diagnostic trouble code (DTC) can also be caused by a defective pump control module.

Other information

See «Checking wiring and terminals»(ref-440209-S33835172972011121400000)
See «Level sensor, fuel tank/fuel pump, replacement»(ref-440269-S09736277772011121400000)
See «Control module fuel pump (FP), replacing»(ref-440263-S25097834532011121400000)

Continue Refer to «Verification»(ref-440276-S35814159962011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Connect the manometer, see «Fuel pressure gauge»(ref-461756-S20486606572012040200000)
Run the engine to operating temperature. Allow the engine to idle
air conditioning (A/C) off
Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, this indicates incorrect function.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S03481798172011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Note. If diagnostic trouble codes (DTC) for the fuel pressure sensor or atmospheric pressure sensor are stored, these diagnostic trouble codes (DTC) must be fault-traced and remedied first.

Connect the manometer, see «Fuel pressure gauge»(ref-461756-S20486606572012040200000) . NOTE: The pressure in the fuel injection system can reach approximately 650 kPa when this diagnostic trouble code (DTC) is stored. Use an adapted manometer.
Run the engine to operating temperature. Allow the engine to idle
air conditioning (A/C) off
Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are roughly the same. If the values are different, the circuit for the fuel pressure sensor is defective.

Are the values equal?

YES Refer to «Checking components»(ref-440276-S18743635102011121400000)
NO Refer to «Checking components and wiring»(ref-440276-S04786759292011121400000)

Check the connectors between the pump control module and the fuel pump (FP). Check for contact resistance and oxidation.

Remedy as necessary.

Try a new pump unit if no fault is found during the above fault-tracing.

Other information

See «Contents»(ref-440209-S18666729612011121400000)
To access or replace the pump control module see «Control module fuel pump (FP), replacing»(ref-440263-S25097834532011121400000) .

Continue Refer to «Verification»(ref-440276-S01971956712011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Connect the manometer, see «Fuel pressure gauge»(ref-461756-S20486606572012040200000)
Run the engine to operating temperature. Allow the engine to idle
air conditioning (A/C) off
Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, this indicates incorrect function.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S22637212092011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Scheme 111

Run the engine to operating temperature. Allow the engine to idle
air conditioning (A/C) off
Read off the fuel pressure and the fuel pressure desired value
Start the quick test when the engine is running at idling. During the course of the quick test, the control module will steer the pressure to different target values in different stages (400, 500, 600 and finally 700 kPa), after which the pressure will be decreased in stages to the same pressure. Each stage lasts for approximately 5 seconds. NOTE: Because the by-pass valve in the fuel pump (FP) will be open at approximately 650 kPa, the pressure will not go higher than this. HINT: see scheme 376 shows an example of normal regulation. The upper digital display and the graphic display (red font color) indicate the absolute fuel pressure, calculated from the fuel pressure sensor The lower digital display and the graphic display (yellow font color) indicate the control module target value for the absolute fuel pressure The lower digital display indicates the relative fuel pressure (white font color), calculated from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). If a manometer is connected during the test, it should indicate this pressure. Check that the value for absolute fuel pressure is the same as the target value for absolute fuel pressure. If the values are not the same, this indicates a fault in the pressure regulation. The values may differ during the quick test when the target value is changed. This is due to sluggishness in the fuel regulation and is normal. In some cases, it can take up to 5 seconds before the fuel pressure reaches the target value for the fuel pressure.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S22637212092011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Note. If diagnostic trouble codes (DTC) for the fuel pressure sensor or atmospheric pressure sensor are stored, these diagnostic trouble codes (DTC) must be fault-traced and remedied first.

To connect the manometer, see «Fuel pressure gauge»(ref-461756-S20486606572012040200000)
Run the engine to operating temperature. Allow the engine to idle
air conditioning (A/C) off
Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, the circuit for the fuel pressure sensor is defective.

Is the fuel pressure sensor correct?

YES Refer to «Checking regulation of the fuel pressure»(ref-440276-S37935107222011121400000)
NO Refer to «Checking components and wiring»(ref-440276-S25408726792011121400000)

Checking regulation of the fuel pressure

WARNING

In this test, the pressure in the fuel injection system will reach approximately 650 kPa. Disconnect the pressure gauge, as it is not intended to be used at such high pressures.

HINT: The method described below is used to check the control of the pressure in the fuel injection system by activating the quick test for the fuel pump (FP). If the pressure gauge for pressures up to 650 kPa is connected, the fuel pressure sensor can also be checked during this test.

Note. In this test, the complete flow capacity of the system is not tested.

Disconnect the manometer unless it is adapted for pressures higher than 650 kPa
Run the engine to operating temperature. Allow the engine to idle
air conditioning (A/C) off
Read off the fuel pressure and the fuel pressure desired value
Start the quick test when the engine is running at idling. During the course of the quick test, the control module will steer the pressure to different target values in different stages (400, 500, 600 and finally 700 kPa), after which the pressure will be decreased in stages to the same pressure. Each stage lasts for approximately 5 seconds. NOTE: Because the by-pass valve in the fuel pump (FP) will be open at approximately 650 kPa, the pressure will not go higher than this. HINT: see scheme 381 shows an example of normal regulation. The upper digital display and the graphic display (red font color) indicate the absolute fuel pressure, calculated from the fuel pressure sensor The lower digital display and the graphic display (yellow font color) indicate the control module target value for the absolute fuel pressure The lower digital display indicates the relative fuel pressure (white font color), calculated from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). If a manometer is connected during the test, it should indicate this pressure. Check that the value for absolute fuel pressure is the same as the target value for absolute fuel pressure. If the values are not the same, this indicates a fault in the pressure regulation. The values may differ during the quick test when the target value is changed. This is due to sluggishness in the fuel regulation and is normal. In some cases, it can take up to 5 seconds before the fuel pressure reaches the target value for the fuel pressure.

Is the pressure regulation correct?

YES Refer to «Checking components»(ref-440276-S07165682192011121400000)
NO Refer to «Checking components»(ref-440276-S22438246072011121400000)

HINT: The fault may be intermittent or be due to the flow capacity in the system being too low.

Check that the fuel level in the tank is not too low (almost no fuel).

Check the fuel lines between the fuel pump (FP) and the fuel rail for the injectors for leakage.

Check the fuel pressure sensor connectors. Check for contact resistance and oxidation.

Check the pump control module connector. Check for contact resistance and oxidation.

Check the fuel lines and fuel filter for blockage.

Remedy as necessary.

Try a new fuel pump (FP) if no fault is found during the above fault-tracing.

Other information

See «Contents»(ref-440209-S18666729612011121400000)
To connect the breakout box, see «Connecting the breakout box»(ref-440211-S03702023042011121400000)
For information about signals, see «Signal specification»(ref-440214-S33124753252011121400000)
To access or replace the fuel pump (FP), see «Level sensor, fuel tank/fuel pump, replacement»(ref-440269-S09736277772011121400000)
To access or replace the pump control module see «Control module fuel pump (FP), replacing»(ref-440263-S25097834532011121400000) .

Continue Refer to «Information»(ref-440276-S21659152592011121400000)

Check that the fuel level in the tank is not too low (almost no fuel).

Check the connectors between the pump control module and the fuel pump (FP). Check for contact resistance and oxidation.

Check the fuel lines and fuel filter for blockage.

Remedy as necessary.

Try a new fuel pump (FP) if no fault is found during the above fault-tracing.

HINT: The diagnostic trouble code (DTC) can also be caused by a defective pump control module.

Other information

See «Contents»(ref-440209-S18666729612011121400000)
To access or replace the fuel pump (FP), see «Level sensor, fuel tank/fuel pump, replacement»(ref-440269-S09736277772011121400000)
To access or replace the pump control module see «Control module fuel pump (FP), replacing»(ref-440263-S25097834532011121400000) .

Continue Refer to «Verification»(ref-440276-S21545710432011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

HINT: After carrying out the repair, check that the fault has been remedied.

Run the engine to operating temperature. Allow the engine to idle
air conditioning (A/C) off
Read off the fuel pressure and the fuel pressure desired value
Start the quick test when the engine is running at idling. During the course of the quick test, the control module will steer the pressure to different target values in different stages (400, 500, 600 and finally 700 kPa), after which the pressure will be decreased in stages to the same pressure. Each stage lasts for approximately 5 seconds. NOTE: Because the by-pass valve in the fuel pump (FP) will be open at approximately 650 kPa, the pressure will not go higher than this. HINT: see scheme 386 shows an example of normal regulation. The upper digital display and the graphic display (red font color) indicate the absolute fuel pressure, calculated from the fuel pressure sensor The lower digital display and the graphic display (yellow font color) indicate the control module target value for the absolute fuel pressure The lower digital display indicates the relative fuel pressure (white font color), calculated from the fuel pressure sensor and the atmospheric pressure sensor (= absolute pressure minus atmospheric pressure). If a manometer is connected during the test, it should indicate this pressure. Check that the value for absolute fuel pressure is the same as the target value for absolute fuel pressure. If the values are not the same, this indicates a fault in the pressure regulation. The values may differ during the quick test when the target value is changed. This is due to sluggishness in the fuel regulation and is normal. In some cases, it can take up to 5 seconds before the fuel pressure reaches the target value for the fuel pressure.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S25276451852011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Connect the manometer, see «Fuel pressure gauge»(ref-461756-S20486606572012040200000)
Run the engine to operating temperature. Allow the engine to idle
air conditioning (A/C) off
Read off the relative fuel pressure. The relative fuel pressure is calculated from the fuel pressure sensor and the atmospheric pressure sensor signal (= absolute pressure minus atmospheric pressure). Check that the value on the manometer and the value displayed in VIDA are the same. If the values are different, this indicates incorrect function.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S25276451852011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Ignition off
Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation
Reinstall the components, reconnect the connectors etc.
Start the engine. Allow the engine to idle. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S). The text "NOT READY" is displayed if the diagnosis is running. Other information For information about signals: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) . To access or replace the heated oxygen sensor (HO2S), see «Heated oxygen sensor (HO2S), replacing»(ref-461749-S04698377542012040200000) See «Contents»(ref-440209-S18666729612011121400000)

Is "FAULT NOT DETECTED" displayed?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking components and wiring»(ref-440276-S10688501452011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the components, reconnect the connectors etc.
Start the engine. Allow the engine to idle. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S). The text NOT READY is displayed if the diagnosis is underway.

Is NOT DETECTED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S06745287812011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the components, reconnect the connectors etc.
Start the engine. Allow the engine to idle. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S). The text NOT READY is displayed if the diagnosis is underway.

Is NOT DETECTED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S00680302382011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the components, reconnect the connectors etc.
Start the engine. Allow the engine to idle. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S). The text NOT READY is displayed if the diagnosis is underway.

Is NOT DETECTED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S25240900932011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Control module previously registered a fault. The fault is now no longer present.

Continue Refer to «Information»(ref-440276-S34398086372011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Faulty signal. Intermittent fault

Ignition off. The control module has registered a fault in the heated oxygen sensor (HO2S). Try a new heated oxygen sensor (HO2S). See «Heated oxygen sensor (HO2S), replacing»(ref-461749-S04698377542012040200000) .

Continue Refer to «Verification»(ref-440276-S17126221072011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the components, reconnect the connectors etc.
Start the engine. Allow the engine to idle. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S). The text NOT READY is displayed if the diagnosis is underway.

Is NOT DETECTED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S03911226632011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Faulty signal. Permanent fault

Checking cables and connectors

Check heated oxygen sensor (HO2S) connector for contact resistance and oxidation according to Contact resistance and oxidation and loose connections according to Loose connections (terminals)

Check signal cable between heated oxygen sensor (HO2S) #4 and control module #A17 (#A17) and power supply between system relay #3 and heated oxygen sensor (HO2S) #3 for an intermittent open-circuit according to Open-circuit, intermittent faults .

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
To access/replace the heated oxygen sensor (HO2S), see «Heated oxygen sensors (HO2S), replacing»(ref-440280-S17464517122011121400000) .
For information about signals: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Information»(ref-440276-S16843388752011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal missing. Intermittent fault

Checking connector

Ignition off
Check heated oxygen sensor (HO2S) connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-461653-S26956869552012040200000) .
Reinstall components, reconnect connectors etc.
Start the engine and let it idle. Read off the front heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if the diagnosis is underway. Other information To access/replace the heated oxygen sensor (HO2S), see «Heated oxygen sensors (HO2S), replacing»(ref-440280-S17464517122011121400000) . For information about signals: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Is FAULT NOT REGISTERED displayed?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking wiring and components»(ref-440276-S24551202782011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the components, reconnect the connectors etc.
Start the engine. Allow the engine to idle. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S). The text NOT READY is displayed if the diagnosis is underway.

Is NOT DETECTED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S28355651692011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal missing. Permanent fault

Checking cables

Check signal cable between heated oxygen sensor (HO2S) #4 and control module #A17 (#A17) for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
To access/replace the heated oxygen sensor (HO2S), see «Heated oxygen sensors (HO2S), replacing»(ref-440280-S17464517122011121400000) .
For information about signals: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Information»(ref-440276-S35801302452011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal too high. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the components, reconnect the connectors etc.
Start the engine. Allow the engine to idle. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S). The text NOT READY is displayed if the diagnosis is underway.

Is NOT DETECTED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S07872039202011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too high. Permanent fault

Check signal cable between heated oxygen sensor (HO2S) #4 and control module #A17 (#A17) for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
To access/replace the heated oxygen sensor (HO2S), see «Heated oxygen sensors (HO2S), replacing»(ref-440280-S17464517122011121400000) .
For information about signals: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Information»(ref-440276-S27281590412011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal too low. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the components, reconnect the connectors etc.
Start the engine. Allow the engine to idle. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S). The text NOT READY is displayed if the diagnosis is underway.

Is NOT DETECTED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S24617866062011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too low. Permanent fault

Start the engine and run it to normal operating temperature
Read off the fuel pump (FP) load. Check whether the fault is permanent or intermittent by checking the value of the fuel pump (FP) load (signal from the engine control module (ECM) to the fuel pump (FP) control module). Check that the signal is approximately 35% (±5%) with the engine idling at operating temperature. The fault is permanent if the signal is incorrect or the engine will not start. The fault is intermittent if the signal is correct.

Continue Refer to «Checking components and wiring»(ref-440276-S01499875602011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Reinstall the connectors, components etc.
Start the engine and run it to normal operating temperature
Read off the fuel pump (FP) load. Check that the engine starts and that the signal is approximately 35% (±5%) when the engine is idling at operating temperature.

Is the function correct?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S00498759992011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Start the engine and run it to normal operating temperature
Read off the fuel pump (FP) load. Check whether the fault is permanent or intermittent by checking the value of the fuel pump (FP) load (signal from the engine control module (ECM) to the fuel pump (FP) control module). Check that the signal is approximately 35% (±5%) with the engine idling at operating temperature. The fault is permanent if the signal is incorrect or the engine will not start. The fault is intermittent if the signal is correct.

Continue Refer to «Checking components and wiring»(ref-440276-S16890411322011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Reinstall the connectors, components etc.
Start the engine and run it to normal operating temperature
Read off the fuel pump (FP) load. Check that the engine starts and that the signal is approximately 35% (±5%) when the engine is idling at operating temperature.

Is the function correct?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440276-S27167168172011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Signal too high/signal too low/signal missing

See Signal too high/signal too low/signal missing

Engine Control Module (ECM) Diagnostic Trouble Codes - 4 of 11: Other Volvo S80 I

Signal too high / Signal too low

Verification

Scheme 96

Scheme 97

Fault-tracing information

Checking fuel injection system

Checking mass air flow (MAF) sensor

Lower limit

Checking the fuel injection system

Scheme 98

Choosing a method for taking a reading

Scheme 99

Checking the residual pressure

Upper limit

Checking for air leakage in the intake system

Measuring the line pressure

Checking fuel system pressure

Scheme 100

Scheme 101

Scheme 102

Scheme 103

Scheme 104

Checking the component

Scheme 105

Checking engine coolant temperature (ECT)

Checking thermostat

Replacing the component

Scheme 106

Fault-tracing

Checking the connector

Checking the status

Scheme 107

Scheme 108

Scheme 109

Faulty signal. Intermittent fault

Faulty signal. Permanent fault

Signal missing. Intermittent fault

Signal missing. Permanent fault

Checking for air leakage in the exhaust system

Scheme 110

Signal too high

Signal too low. Intermittent fault

Signal too low. Permanent fault

Faulty signal

Signal too low

Signal too high. Intermittent fault

Signal too high. Permanent fault

Checking the fuel pressure sensor

Checking components

Scheme 111

Checking regulation of the fuel pressure

Checking cables and connectors

Checking connector

Checking cables

Signal too high/signal too low/signal missing

More articles — Engine Control Module (ECM) Diagnostic Trouble Codes - 4 of 11

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