Check engine
Asked by Stephanie Apr 30, 2018 at 04:41 AM about the 2005 Chevrolet Malibu LT FWD
Question type: Maintenance & Repair
My 05 Malibu has a check engine and TC
light on along with a message engine
reduced power, i can't figure out the
problem. It also is throwing codes P0658
U0107..Help please
2 Answers
brotherben answered 5 years ago
It's more and likely a wiring problem between your ECM and throttle actuator
The P0658 code detects a problem with the actuator supply voltage “A” circuit. This problem usually requires the replacement of wires and connectors in the PCM (ECM) control module. Ground wires should be checked first. P0107 is the general code for a problem with the MAP circuit sensor having too low voltage input to the Engine Control Unit (ECU). Check the MAP sensor voltage in and out along with the electrical connector and wiring. Determine if the MAP sensor is defective and if it has no or incorrect output, replace the sensor. This is the normal procedure listed in my GM Shop Maintenance Manual, Revised January 2006. Unless you know what you are doing, it will be necessary to take the car to a repair shop, if you do this, just ask for a diagnosis and estimate, do not say what you already know; there are other parts associated with these codes and you may be told that they have to be replaced. No reputable repair shop or mechanic should do that but, just in case.