DESCRIPTION:This code will set when the Needle solenoid current response time does not meet requirement.

MONITORED PARAMETER:Injector cylinder #1 needle control valve current.

TYPICAL ENABLING CONDITIONS:Always enabled

MONITOR SEQUENCE:None

EXECUTION FREQUENCY:Continuous

TYPICAL DURATION:5 seconds

DASH LAMPS:1. MIL2. CEL

ENGINE REACTION:1. Derate 25%.2. EGR Valve shut.3. DPF Inhibit Regeneration.

VERIFICATION:Engine Idle: One minute.

NOTE: If code 168-xx or 723-xx present, fix those first.

PROBABLE CAUSES:1. Front fuel injector harness connection (14-pins).2. Injector harness.3. Failed injector.4. Engine side harness failure.5. MCM (Engine ECM) failure.