What does code P1810 mean?

Q: What does code P1810 mean?

ATF Pressure Manual Valve Position Switch Malfunction. P1810 on GM vehicles means the transmission control module (TCM) has detected an invalid or implausible signal from the automatic transmission fluid (ATF) pressure manual valve position switch, which is the internal switch assembly that tells the computer which gear range the driver has selected. The TCM compares the switch pattern to the commanded range and sets this code when the voltage combination does not match any valid position or changes unexpectedly while driving.

DTC codes / GM codes / P1810

P1810 · GMATF Pressure Manual Valve Position Switch Malfunction

P1810 on GM vehicles means the transmission control module (TCM) has detected an invalid or implausible signal from the automatic transmission fluid (ATF) pressure manual valve position switch, which is the internal switch assembly that tells the computer which gear range the driver has selected. The TCM compares the switch pattern to the commanded range and sets this code when the voltage combination does not match any valid position or changes unexpectedly while driving.

SystemPowertrain

Code typeGM specific

SeverityMedium

Fix difficultyIntermediate

AreaTransmission

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