2017年10月31日 · Code P0251 is an electrical issue. Both electrical issue and air issue can cause engine stall. You have an in tank lift pump which always provides positive fuel pressure to CP3, so there should be no air issue in the fuel rail. Unless your lift pump and fuel lines are defective then you will have air issue. Try to fix code P0251. _____

2003年12月20日 · 1996 chevy tahoe 6.5td (110K)the truck is int. stalling along with int.long crank. however alway will start up again, may need to give it gas. Snap-0n scanner shows p0251 inj. cam pump "a" rotor fault. scanner trouble shooters say air in system will also set fault.

2007年5月28日 · The p0251 means there is a problem that was sensed with the fuel circuit internally to the pump. I see you've got the edge juice that should tap the pump wire but it should not set any codes. My redline sets P0253 which is a open detected on the same circuit, but that's when it takes over fueling.

2010年7月9日 · P0251 - CP3 Pump Regulator Control; Injector Pump Fuel Valve Feedback: The ECM detects a discrepancy between PWM supplied to FCA and PWM returned from FCA. Possible causes: - Intermittent condition - Fuel Control Actuator - Return wire open from FCA to ECM - Supply wire open from FCA to ECM - Supply circuit shorted to voltage - ECM

2011年11月14日 · code p0251, cant find problem. Jump to Latest 34K views 17 replies 3 participants last post by WOLFAVENGER90 Nov 22, 2011

2010年9月18日 · P0251 I.P. Fuel metering control A (cam, rotor, injector) P0370 Timing reference high resolution signal A P1214 I.P Timing offset The truck wants to start and does but only for a second, like there is not enough fuel getting to the cylinders to keep it running... All of you have given me good advise before and I appreciate your help.

2024年1月9日 · P0251 is The ECM detects a discrepancy between the PWM supplied to the Electronic Fuel Control Actuator and the PWM returned from the Electronic Fuel Control Actuator. Always a good idea to make sure good power /grounds, proper tuning in proper ECM. If all other steps were good Finish diagnostics and will tell you if ECM bad

Intermittent DTCs (P0251, P0370 and P1216) may be caused by air entering the fuel system when fuel levels get below 1/8 of a tank while performing hard acceleration or turning maneuvers. It's also possible that a P0251, P0370 and P1216 will set the if vehicle has run out of fuel.

2013年5月1日 · P0251- CP3 pump regulator control step 1: Ignition on, engine not running disconnect he fuel control actuator (FCA) harness connector connect a incandesant test light across the the driver circuit and fuel control actuator circuit harness connector.

2020年4月9日 · My bus has been giving me codes P0251 and P0370. There are no drivability issues and the RPMs stay steady at 2000 RPM if I can hold my foot perfectly still. the throttle seems very sensitive in neutral. I have replaced and relocated the PMD. I put it inside the air filter box, I figured the...