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Engine Management System

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Engine Management System Empty Engine Management System

Post by davecrawf Sun Aug 06, 2023 4:36 pm

My engine warning light has been on since leaving Spain in March this year. Using an OBD I have obtained two error codes
1. P0401 EGR Flow insufficient 
2. P0638 Throttle Actuator 

I have managed to resolve (1) by repairing a split pneumatic hose.  However I cannot understand why I have error code (2)

There are no issues with the actual running of the vehicle. I would just like understand and resolve the warning system. 

Does anyone have experience of such things and can help me please.

Much appreciated

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Engine Management System Empty Re: Engine Management System

Post by PLOUGHLIN Sun Aug 06, 2023 5:38 pm

Could it be related to the EGR fault? Perhaps the TB sensorneeds resetting. Disconnecting the battery for >5 mins might cure it.

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Engine Management System Empty Re: Engine Management System

Post by davecrawf Sun Aug 06, 2023 7:21 pm

PLOUGHLIN wrote:Could it be related to the EGR fault? Perhaps the TB sensorneeds resetting. Disconnecting the battery for >5 mins might cure it.
Thank Peter,
I will give that a go.

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Engine Management System Empty Re: Engine Management System

Post by IanH Sun Aug 06, 2023 9:21 pm

Poss unnecessary but I'd check I had the radio codes before disconnecting the VB?
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