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EGR Fault P1335 Please check my diagnosis

9.8K views 1 reply 2 participants last post by  mike4369  
#1 ·
Hi All, can you help please

Std engine, no mods 08yr, 2ltr, manual,140bhp model

I've got the fault code P1335 showing: EGR Position Sensor Minimum Stop Performance

Additional fault: Circuit Voltage out of range

forscan says, Possible cause: Electrical fault in the EGR control Circuit OR sticking EGR valve

I ran the diagnosis on Forscan adding all the EGR fields I could find

I've hosted a picture on photobucket but I can't get it to show here, TF says I can't do that??

This is with the engine running, and then with a series of gentle throttle blips. The EGR tube gets warm with the engine at idle for 10 mins while doing this

I already read on here that the top two traces - Valve position (volts) and Solenoid Valve duty Cycle should be linked - and they are. Thats telling me the wiring is sending a signal and the solenoid is trying to open and close the EGR valve

The 4th trace - the throttle plate position sensor voltage seems to never change, its always at 4.38v don't know if thats good or bad

The 5th Trace - the Command EGR% seems to be doing something, looks OK

Its the 3rd trace the EGR error - described as the difference between the EGR commanded and actual. This just swings from -100% to +99% Thats telling me the EGR valve isn't doing what it should be and its probably stuck

Am I right?