C5 2.2hdi Bosch system 2002 fuel pump issues

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adamtemp64
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C5 2.2hdi Bosch system 2002 fuel pump issues

Post by adamtemp64 »

Ok I had an issue with the high pressure pump.

Replacement pump fitted but it had a blocked regulator.

Regulator replaced (secondhand but with new seals thanks to ddl)

Now getting in lexia P1138 That fluctuates between permanent / Temp fault. Fuel Pressure Regulator Stop requested But Regulator still Active.

Any Pointers please

I can post any additional info requested from lexia as required.
C5 2.2hdi
Lexia and pp2000 clone available
wheeler
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Joined: 21 Sep 2002, 19:07
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Post by wheeler »

If you follow the wiring down from the fuel rail pressure sensor to just near the sump there should be a yellow 3 pin connector, poor connections at this plug is the usual cause of this fault, cut the connector off & solder the wires direct. This fault is sometimes acompanied by the engine running on for a few seconds after switching the ignition off ?
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