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Posted

Hi guys,need some help with this one?
Recently my 2009 dispatch  Relay 120 lwb 2.2 Threw a code for failed egr.
This was replaced with a brand new unit and the eml was reset by the garage.
2 weeks later the eml came back on with this code p1304 (egr calibration high?
The van runs fine apart from a hesitation between 1.5 and 2.5 revs with light on.
If I reset ECU then start the van the light stays out and the engine revs correctly but once I turn her off,the code returns with the same hesitation and what I feel is slight detonation.
Any thought would be greatly received as I'm stumped.
Thankyou

Posted

Most EGRs have to be coded into the vehicle when replaced. 

 

This is a main dealer or clever person with Lexia type job.

 

Someone who knows will be along to correct me, but last time I had a duff EGR replaced it gave me intermittent fault codes until it was coded into the vehicle.

Posted

I read somewhere that on some engines the egr valve is operated a few times when the engine is switched off and you can hear this on our 1.6 hdi C4. So maybe the fault code is generated at this time if your engine does the same.

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