See DTC P0137 & P0138: OXYGEN SENSOR LOW/HIGH VOLTAGE (BANK NO. 1, SENSOR NO. 2) , DTC P0140: OXYGEN SENSOR NO SIGNAL OR POOR SIGNAL DETECTED (BANK NO. 1, SENSOR NO. 2) , DTC P0157 & P0158: OXYGEN SENSOR CIRCUIT LOW/HIGH VOLTAGE (BANK NO. 2, SENSOR NO. 2) and DTC P0160: OXYGEN SENSOR NO SIGNAL OR POOR SIGNAL DETECTED (BANK NO. 2, SENSOR NO. 2) .
Home/Jaguar/XJR/Jaguar XJR II (1994-2003)/Repair manual/Testing & Diagnostics/DTC P0420 & P0430: CATALYST EFFICIENCY BELOW THRESHOLD
Contents
Wiring diagrams Section: Testing & Diagnostics- Engine Controls - Basic Diagnostic Procedures: Diagnosis
- Engine Controls - Basic Diagnostic Procedures: Other
- Engine Controls - Self-Diagnostics: Overview
- Engine Controls - Self-Diagnostics: Diagnosis
- Engine Controls - Self-Diagnostics: Component Locations
- Engine Controls - Self-Diagnostics: Other
- DTC P0101: MASS AIRFLOW SENSOR PERFORMANCE
- DTC P0102, P0103 & P1104: MASS AIRFLOW SENSOR CIRCUIT
- DTC P0111 & P0112: INTAKE AIR TEMPERATURE SENSOR
- DTC P0113: INTAKE AIR TEMPERATURE SENSOR
- DTC P0116: ENGINE COOLANT TEMPERATURE SENSOR PERFORMANCE & DTC P0125: INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL
- DTC P0117: ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT LOW INPUT (XJ SERIES)
- DTC P0117: ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT LOW INPUT (XK8)
- DTC P0118: ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT HIGH INPUT (XJ SERIES)
- DTC P0118: ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT HIGH INPUT (XK8)
- DTC P0121: THROTTLE POSITION SENSOR "A" PERFORMANCE
- DTC P0122: THROTTLE POSITION SENSOR "A" VOLTAGE LOW OR DTC P0222: THROTTLE POSITION SENSOR "B" VOLTAGE LOW
- DTC P0123: THROTTLE POSITION SENSOR "A" VOLTAGE HIGH OR DTC P0223: THROTTLE POSITION SENSOR "B" VOLTAGE HIGH
- DTC P0125: INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL
- DTC P0131, P0132 & P0135: HO2S CIRCUIT LOW/HIGH VOLTAGE OR HEATER CIRCUIT MALFUNCTION (BANK NO. 1, SENSOR NO. 1)
- DTC P0133: HO2S SENSOR CIRCUIT SLOW RESPONSE (BANK NO. 1, SENSOR NO. 1)
- DTC P0135: HO2S HEATER CIRCUIT MALFUNCTION (BANK NO. 1, SENSOR NO. 1)
- DTC P0137 & P0138: OXYGEN SENSOR LOW/HIGH VOLTAGE (BANK NO. 1, SENSOR NO. 2)
- DTC P0140: OXYGEN SENSOR NO SIGNAL OR POOR SIGNAL DETECTED (BANK NO. 1, SENSOR NO. 2)
- DTC P0151, P0152 & P0155: HO2S SENSOR CIRCUIT LOW/HIGH VOLTAGE OR HEATER CIRCUIT MALFUNCTION (BANK NO. 2, SENSOR NO. 1)
- DTC P0153: HO2S SENSOR CIRCUIT SLOW RESPONSE (BANK NO. 2, SENSOR NO. 1)
- DTC P0155: HO2S SENSOR HEATER CIRCUIT MALFUNCTION (BANK NO. 2, SENSOR NO. 1)
- DTC P0157 & P0158: OXYGEN SENSOR CIRCUIT LOW/HIGH VOLTAGE (BANK NO. 2, SENSOR NO. 2)
- DTC P0160: OXYGEN SENSOR NO SIGNAL OR POOR SIGNAL DETECTED (BANK NO. 2, SENSOR NO. 2)
- DTC P0171, P0172, P0174 OR P0175: SYSTEM TOO LEAN/RICH
- DTC P0201-P0208: INJECTOR CIRCUIT
- DTC P0222: THROTTLE POSITION SENSOR "B" VOLTAGE LOW
- DTC P0223: THROTTLE POSITION SENSOR "B" VOLTAGE HIGH
- DTC P0300-P0308, P1313, P1314 & P1316: MISFIRE
- DTC P0327, P0328, P0332 & P0333: KNOCK SENSOR
- DTC P0335: CRANKSHAFT POSITION SENSOR CIRCUIT
- DTC P0340: CAMSHAFT POSITION SENSOR CIRCUIT OR P1336: CRANKSHAFT OR CAMSHAFT POSITION SENSOR PERFORMANCE
- DTC P0351-P0358: IGNITION COIL CIRCUIT MALFUNCTION
- DTC P0400: EGR FLOW MALFUNCTION (XJR)
- DTC P0405: EGR SENSOR CIRCUIT LOW (XJR)
- DTC P0406: EGR SENSOR CIRCUIT HIGH (XJR)
- DTC P0420 & P0430: CATALYST EFFICIENCY BELOW THRESHOLD
- DTC P0441: EVAP CONTROL SYSTEM (XK8)
- DTC P0442: EVAP CONTROL SYSTEM LEAK DETECTED (XJ SERIES)
- DTC P0444 & P0445: EVAP CONTROL SYSTEM PURGE VALVE (XJ SERIES)
- DTC P0444 & P0445: EVAP CONTROL SYSTEM PURGE VALVE (XK8)
- DTC P0447 & P0448: EVAP CONTROL SYSTEM CANISTER CLOSE VALVE CIRCUIT (XJ SERIES)
- DTC P0452 & P0453: FUEL TANK PRESSURE SENSOR
- DTC P0460: FUEL LEVEL SENSOR
- DTC P0506 & P0507: IDLE SPEED CONTROL SYSTEM
- DTC P0560: SYSTEM VOLTAGE MALFUNCTION
- DTC P0603: INTERNAL ECM ERROR
- DTC P1104: MASS AIRFLOW SENSOR
- DTC P1112: INTAKE AIR TEMPERATURE SENSOR NO. 2 HIGH VOLTAGE (XJR)
- DTC P1113: INTAKE AIR TEMPERATURE SENSOR NO. 2 LOW VOLTAGE (XJR)
- DTC P1224: ELECTRONIC THROTTLE CONTROL POSITION ERROR
- DTC P1226: MECHANICAL GUARD CIRCUIT RANGE
- DTC P1227 & P1228: MECHANICAL GUARD CIRCUIT LOW OR HIGH INPUT
- DTC P1229: THROTTLE CONTROL CIRCUIT MALFUNCTION
- DTC P1230: FUEL PUMP RELAY MALFUNCTION
- DTC P1240: SENSOR POWER SUPPLY MALFUNCTION
- DTC P1241-P1242: SENSOR POWER SUPPLY LOW OR HIGH INPUT
- DTC P1243: ANALOG GROUND MALFUNCTION
- DTC P1245-P1246: CRANK SIGNAL LOW OR HIGH INPUT
- DTC P1313, P1314 & P1316: MISFIRE, CATALYST DAMAGE/EXCESS EMISSIONS
- DTC P1336: CAMSHAFT POSITION SENSOR (CMP) CIRCUIT
- DTC P1367: IGNITION SYSTEM FAILURE GROUP 1
- DTC P1368: IGNITION SYSTEM FAILURE GROUP 2
- DTC P1392 & P1397: VARIABLE VALVE TIMING SOLENOID LOW INPUT
- DTC P1393 & P1398: VARIABLE VALVE TIMING SOLENOID HIGH INPUT
- DTC P1396 VARIABLE VALVE TIMING (VVT) SOLENOID "B" MALFUNCTION
- DTC P1397: VARIABLE VALVE TIMING SOLENOID "B" LOW INPUT
- DTC P1398: VARIABLE VALVE TIMING SOLENOID "B" HIGH INPUT
- DTC P1474: INTERCOOLER COOLANT PUMP RELAY MALFUNCTION
- DTC P1516: PARK/NEUTRAL MALFUNCTION
- DTC P1609: INTERNAL ECM ERROR
- DTC P1611: THROTTLE TARGET MALFUNCTION
- DTC P1612: THROTTLE OFFSET MALFUNCTION
- DTC P1646: SECONDARY FUEL PUMP RELAY MALFUNCTION (XJR)
- Engine Controls - Trouble Shooting - No Codes: Diagnosis
- Engine Controls - Trouble Shooting - No Codes: Other
- Diagnostic Trouble Codes - Powertrain: Diagnosis
- Diagnostic Trouble Codes - Powertrain: Other
- DTC P0420: Catalyst efficiency below threshold - A bank
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