Quote:
Originally Posted by norcalpb
I was thinking the same thing. I wonder if this is a symptom of my BCM being fried after I expertly removed the door lights with a metal screw driver, with the harness still plugged in.
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Definitely not. Except for the most whacky edge cases, fried components are a hard failure. This is one of a whole pile of closed-loop servo systems. There is a pressure sensor (feedback) interpreted by the controller (ECU) which then sends a corresponding output to the regulator solenoid.
A high pressure signal could be the result of the failed regulator, or it could be a sensor circuit open. If the result of a failed regulator, the pressure sensor MIGHT show a fluctuating reading. Open sensor will show hard high for sure.