What does code P26D0 mean?

Q: What does code P26D0 mean?

Engine Coolant Pump Control Module System Voltage Low. P26D0 indicates that the engine control module (ECM) or powertrain control module (PCM) has detected a low voltage condition on the electrical circuit that powers or controls the engine coolant pump control module. The ECM monitors the supply voltage to the coolant pump control module and sets this code when the voltage falls below the expected threshold, which can prevent the coolant pump from operating correctly and may lead to engine overheating.

DTC codes / P26xx · Computer and output circuits / P26D0

P26D0Engine Coolant Pump Control Module System Voltage Low

P26D0 indicates that the engine control module (ECM) or powertrain control module (PCM) has detected a low voltage condition on the electrical circuit that powers or controls the engine coolant pump control module. The ECM monitors the supply voltage to the coolant pump control module and sets this code when the voltage falls below the expected threshold, which can prevent the coolant pump from operating correctly and may lead to engine overheating.

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.