Car throwing P0641 code - interpretation???

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Jun 25, 2007 | 12:49 PM

ourayzman

Thread Starter

Intermediate

Joined: Aug 2005

Posts: 42

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From: Ouray Colorado

Car throwing P0641 code - interpretation???

My car went into reduced engine power mode recently so I pulled codes and it had one, P0641. My code reader interpretted it as
"Sensor A reference Voltage Circuit/Open". Another list of codes indicates it means "5-Volt Reference 1 Circuit ECM". Does anyone know which sensor A is? or have any further information on this code.

Thanks in advance

Jun 26, 2007 | 07:49 AM

REVAK

Drifting

Joined: Apr 2006

Posts: 1,276

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From: Ambler Pa.

Quote:

Originally Posted by ourayzman

You may want to see your dealer for this one. DTC PO641 pertains to 6 sensors bussed together in the ECM. MAP, EOP, FTP, A/C, APP, CMP.[manifold absolute pressure,engine oil pressure,fuel tank pressure,air conditioning refrigerant pressure,accelerator pedal position sensor#2,camshaft position sensor, 2006 . Check for a loose gas cap first.

Jan 26, 2009 | 07:56 PM

Luweegy

Safety Car

Joined: Nov 2005

Posts: 3,835

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From: Grand Junction Colorado

I would ck wiring at the sensors mentioned.

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