GMC P1656: Wastegate Solenoid Control Circuit Malfunction
Is your scanner showing GMC P1656?
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GMC P1656: Wastegate Solenoid Control Circuit Malfunction
OVERVIEWWhat Does The GMC P1656 Code Mean?
Engine started, engine running, Wastegate Solenoid commanded “on” (Test 1), and the PCM detected the voltage on the solenoid control circuit remained near 12v, or with solenoid commanded “off” (Test 2), the voltage on the solenoid control circuit remained.
What Are The Potential Causes Of The GMC P1656 Code?
- Waste solenoid circuit is open, shorted to ground or to power (B+)
- Wastegate solenoid power circuit is open (check ENG1 fuse)
- Wastegate solenoid is damaged or has failed
- PCM has failed
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> GM Genuine Parts 12633238 Engine Control Module
>>> Turbo Wastegate Controller Solenoid
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Technical Service Bulletin PIP5094 for P1656 – General Motors
