Fuel Injection Pump CKP Sensor Does Not Agree With ECM CKP Sensor
Table of contents
P1690 JEEP Possible Causes
- AC Noise Across Fuel Transfer Pump
- Other DTCs Present
- Wiring & Connectors
- Fuel Injection Pump Static Timing
- Fuel Sync Signal Circuit Open
- Fuel Sync Signal Circuit Short To Ground
- Engine Control Module (ECM)
How do I fix code P1690 JEEP?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1690 JEEP code
The cost of diagnosing the P1690 JEEP code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1690 JEEP Description
Fuel Injection Pump Crankshaft Position (CKP) circuit is monitored when the ignition is on, and the engine is running. The P1690 code may be stored when no signal exists within specified window parameters with no Camshaft Position (CMP) sensor or CKP DTCs present.