What does code P26D9 mean?

Q: What does code P26D9 mean?

Engine Coolant Pump Clutch Control Circuit Low. P26D9 indicates that the powertrain control module (PCM) has detected a low-voltage condition on the control circuit for the engine coolant pump clutch. This circuit commands the clutch that engages the coolant pump, and a low signal means the PCM sees voltage below the expected threshold, which can prevent the pump from operating correctly.

DTC codes / P26xx · Computer and output circuits / P26D9

P26D9Engine Coolant Pump Clutch Control Circuit Low

P26D9 indicates that the powertrain control module (PCM) has detected a low-voltage condition on the control circuit for the engine coolant pump clutch. This circuit commands the clutch that engages the coolant pump, and a low signal means the PCM sees voltage below the expected threshold, which can prevent the pump from operating correctly.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaComputer and output circuits

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