OBD Engine Coolant Pump Control Circuit Low
What it means
P26CC stands for Engine Coolant Pump Control Circuit Low. P26CC is a P code, so the fault sits in the engine, transmission and emissions systems. For P26CC, the second digit places it in computer output circuits. For P26CC, work through the cause list below, cheapest checks first.
Where it lives
For P26CC, the circuit described runs through the pump. The description of P26CC reports a fault at the pump.
What to check first
For P26CC, check the wiring and connector on this circuit first, since a broken terminal gives the same reading as a failed part.
Check these first
- P26CC: Faulty sensor or actuator in the control circuit
- P26CC: Wiring, connector, or fuse problem for the affected output
- P26CC: Low or unstable system voltage from the battery or charging system
- P26CC: Failed PCM/ECM or a software error
- P26CC: Poor ground connection for the control module
What to do next
P26CC reports from the computer output circuits system. These steps cover P26CC in general, and the exact cause on your vehicle can differ from the cause named above.
- P26CC: Verify battery voltage and charging system health first
- P26CC: Read all related module codes with an OBD-II scanner
- P26CC: Inspect wiring, connectors, and grounds for the affected circuit
- P26CC: Test the sensor or actuator with live data and actuation commands
- P26CC: Check for PCM software updates or TSBs before replacing modules
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Updated
Generic SAE J2012 definition. Last updated 2026-08-30.