P1690 CHRYSLER – Fuel Injection Pump CKP Sensor Does Not Agree With ECM CKP Sensor

P1690 CHRYSLER Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1690 CHRYSLER 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)

P1690 CHRYSLER 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.