DTC P0405-A: EGR POSITION SENSOR VOLTAGE TOO LOW Chrysler LHS II

Note. For connector terminal ID, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS article.

1. Using scan tool, read Diagnostic Trouble Codes (DTCs). If scan tool display GLOBAL GOOD TRIP is equal to zero, go to step 4 . If scan tool display GLOBAL GOOD TRIP is not equal to zero, go to next step.
2. Using scan tool, read FREEZE FRAME data. Ensure hex code matches DTC on scan tool. Hex code should be D4. If DTC matches hex code on scan tool, go to next step. If DTC does not match hex code on scan tool, repair DTC using FREEZE FRAME data. Perform «TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES»(ref-576-S06971814902000030800000) .
3. Read FREEZE FRAME data on scan tool. Try to duplicate conditions identified on scan tool. Pay particular attention to code set conditions: engine RPM, coolant temperature and engine load. Using scan tool, observe GLOBAL GOOD TRIP counter. If GLOBAL GOOD TRIP counter changed to zero, go to next step. If GLOBAL GOOD TRIP counter does not change to zero, go to «DTC P0405-B: EGR POSITION SENSOR VOLTAGE TOO LOW»(ref-576-S12010884692000030800000)
4. Disconnect EGR solenoid electrical connector. Using a voltmeter, check voltage of 5-volt supply circuit at EGR solenoid connector. See «EGR SOLENOID CONNECTOR WIRE IDENTIFICATION»(ref-576-S02292235822000030800000) table. If voltage is 4 volts or more, go to next step. If voltage is less than 4 volts, repair open 5-volt supply circuit. Perform «TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES»(ref-576-S06971814902000030800000) .
5. Using scan tool, read EGR position sensor voltage. If voltage is .8 volt or less, go to next step. If voltage is more than .8 volt, replace EGR solenoid assembly. Perform «TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES»(ref-576-S06971814902000030800000) .
6. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Using an ohmmeter, check resistance between EGR sensor signal circuit and ground at EGR solenoid connector. See «EGR SOLENOID CONNECTOR WIRE IDENTIFICATION»(ref-576-S02292235822000030800000) table. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair short to ground on EGR sensor signal circuit. Perform «TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES»(ref-576-S06971814902000030800000) .
7. Using an ohmmeter, check resistance between EGR sensor signal circuit and sensor ground circuit at EGR solenoid connector. See «EGR SOLENOID CONNECTOR WIRE IDENTIFICATION»(ref-576-S02292235822000030800000) table. If resistance is less than 5 ohms, repair EGR sensor signal circuit for a short to sensor ground circuit. Perform «TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES»(ref-576-S06971814902000030800000) . If resistance is 5 ohms or more, replace PCM. Perform «TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES»(ref-576-S06971814902000030800000) .

EGR SOLENOID CONNECTOR WIRE IDENTIFICATION