Chrysler DTC P1690 – Fuel injection pump CKP Sensor Does Not Agree With ECM CKP Sensor
DTC P1690 meaning on Chrysler
DTC P1690 on a Chrysler vehicle indicates that the Fuel Injection Pump Controller (FIPC) has detected a discrepancy between the Crankshaft Position (CKP) sensor signal received by the Engine Control Module (ECM) and the signal received by the fuel injection pump.
Chrysler DTC P1690 symptoms
Symptoms of DTC P1690 on a Chrysler may include:
- Check Engine Light illuminated
- Engine may run rough or stall
- Loss of power
- Difficulty starting the engine
Chrysler DTC P1690 causes
Common causes of DTC P1690 on a Chrysler include:
- Faulty CKP sensor
- Wiring or connection issues between the CKP sensor and ECM
- Faulty ECM
- Issues with the fuel injection pump
Chrysler DTC P1690 seriousness
DTC P1690 should be addressed promptly as it can lead to drivability issues and potential engine damage if left unresolved. Ignoring this code may result in poor engine performance and increased fuel consumption.
How to diagnose DTC P1690 on Chrysler
To diagnose DTC P1690 on a Chrysler, a mechanic may perform the following steps:
- Use a scan tool to retrieve the fault codes and freeze frame data
- Inspect the CKP sensor and its wiring for any visible damage
- Check the connections between the CKP sensor and ECM
- Test the CKP sensor using a multimeter
- Inspect the fuel injection pump for any issues
How to fix DTC P1690 on Chrysler
To fix DTC P1690 on a Chrysler, the following steps may be taken:
- Replace the faulty CKP sensor if necessary
- Repair any damaged wiring or connections
- Replace the ECM if it is found to be faulty
- Address any issues with the fuel injection pump
How to erase DTC P1690 on Chrysler
To erase DTC P1690 on a Chrysler, the fault codes can be cleared using a scan tool. After the repairs have been made and the issue resolved, the codes can be cleared to reset the Check Engine Light.
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