What does code P281D mean?

Q: What does code P281D mean?

Pressure Control Solenoid H Control Circuit Low. P281D indicates that the transmission control module (TCM) has detected a low voltage condition on the control circuit for pressure control solenoid H, which is one of several solenoids that regulate hydraulic pressure inside the automatic transmission. The circuit is considered low when the voltage falls below the manufacturer's specified threshold, often indicating a short to ground, an open circuit, or a faulty solenoid.

DTC codes / P28xx · Transmission / P281D

P281DPressure Control Solenoid H Control Circuit Low

P281D indicates that the transmission control module (TCM) has detected a low voltage condition on the control circuit for pressure control solenoid H, which is one of several solenoids that regulate hydraulic pressure inside the automatic transmission. The circuit is considered low when the voltage falls below the manufacturer's specified threshold, often indicating a short to ground, an open circuit, or a faulty solenoid.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaTransmission

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