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I recently took my truck in to have the AC charged and he pulled the codes for me since my check engine light had been cominng on, These are the codes that came up. His handwriting looks like a doctors so bear with me.
675 electric preasure control driver open
211 profile ICM pickup eratic
332 egr vac. not-open
628 -no explanation
The vacum controled sensor located under the egr valve closest to the front of the engine makes a buzzing sound sometimes after I shut the motor off, I also have a restictor plate with a 1/8 inch hole between the egr and manifold, but this has never caused a problem in the past.
I have a chilton but it doesnt seem to help me to much.
These 2 codes concern me the most, The transmission seems to be working fine, I have a B&M shift improover box installed and and it still shifts good and firm,no slippage that I can feel? Its a E4OD by the way
211 PIP circuit failure.
I couldn't find any information about what or where this is. Is it part of the transmission circitry?