What does code P1655 mean?

Q: What does code P1655 mean?

EVAP Purge Solenoid Control Circuit. P1655 on GM vehicles means the powertrain control module (PCM) has detected an electrical fault in the control circuit for the EVAP (evaporative emission) purge solenoid, which is the valve that meters fuel vapor from the charcoal canister into the intake. The PCM monitors the circuit for opens, shorts to ground or power, and excessive current draw, and it sets this code when the voltage or current on the control wire falls outside the expected range.

DTC codes / GM codes / P1655

P1655 · GMEVAP Purge Solenoid Control Circuit

P1655 on GM vehicles means the powertrain control module (PCM) has detected an electrical fault in the control circuit for the EVAP (evaporative emission) purge solenoid, which is the valve that meters fuel vapor from the charcoal canister into the intake. The PCM monitors the circuit for opens, shorts to ground or power, and excessive current draw, and it sets this code when the voltage or current on the control wire falls outside the expected range.

SystemPowertrain

Code typeGM specific

SeverityLow

Fix difficultyIntermediate

AreaComputer and output circuits

Guidance is general and written for GM vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.