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Discussion Starter #1
Hi

Having just bought a 2003 307 2.0L XSi I decided to do a diagnostoc check on PP2000 and it registered the following from the Engine ECU......

1. ENGINE ECU - Intermittent Fault - Control Unit - Potential Causes, Damaged connection or harness, Faulty Control Unit

2. ENGINE ECU - Intermittent Fault - Downstream Oxygen Sensor

Could someone help to explain these? I am assuming that the 2nd fault is the Lamda Sensor??

Any help gratefully received - the engine does have a misfire when cold.......

Thanks in advance

David
 

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Discussion Starter #5
Cheers for that......I will do as suggested.

Glad to hear from you Bettyswallocks! As you can guess the old 406 is on its way......she wanted a 307 so got her a relatively sporty one - seems a cracking motor!
 
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