P0659 Buick Actuator Supply Voltage A Circuit High
Possible causes
– Faulty Engine Control Module (ECM)
– ECM harness is open or shorted
– ECM circuit poor electrical connection
– ECM Programming
– ECM harness is open or shorted
– ECM circuit poor electrical connection
– ECM Programming
What about the obd code?
The Engine Control Module (ECM) has detected a high voltage to the transmission control solenoids.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
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