P1690
Fuel Injection Pump CKP Sensor Does Not Agree With ECM CKP Sensor
P1690 is an OBD-II diagnostic trouble code meaning: Fuel Injection Pump CKP Sensor Does Not Agree With ECM CKP Sensor. Common causes: malfunction of the fuel injection pump crankshaft position sensor, problems with the ecu ckp sensor. Estimated repair cost: $28–89.
Symptoms
- Unstable engine operation
- Power dips
- Difficulty starting the engine
- Increased fuel consumption
- Check Engine Light Illuminates
Causes
- Malfunction of the fuel injection pump crankshaft position sensor
- Problems with the ECU CKP sensor
- Damaged wiring or poor contact
- Fuel injection pump module malfunction
- ECU software error
How to Fix
- Check the condition of the CKP sensors
- Check the integrity of wiring and contacts
- Read sensor operating parameters using a scanner
- Replace faulty components
- Flash the ECU if necessary
Related codes
Error P1690 by Vehicle Brand
FAQ
What does the P1690 code mean?
P1690 is an OBD-II diagnostic trouble code that indicates: Fuel Injection Pump CKP Sensor Does Not Agree With ECM CKP Sensor
What causes a P1690 error code?
The most common causes of P1690 include: Malfunction of the fuel injection pump crankshaft position sensor; Problems with the ECU CKP sensor; Damaged wiring or poor contact; Fuel injection pump module malfunction.
How do I fix a P1690 diagnostic trouble code?
To fix P1690: Check the condition of the CKP sensors. Check the integrity of wiring and contacts. Read sensor operating parameters using a scanner. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1690?
Limited driving only, diagnose soon
How much does it cost to fix P1690?
The estimated repair cost for P1690 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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