P2601Coolant Pump A Control Circuit Performance/Stuck Off
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2601 is set when electric coolant pump A is commanded on, yet its feedback or its effect shows that it is not really working, while the wiring itself tests sound. GM's 2008 table for the 3.6 L LLT judges its auxiliary pump indirectly: after a shutdown with coolant above 110 °C the pump runs on, and if the coolant does not cool down as the ambient-dependent calibration expects within about 80 s, the code is logged. Ford reprograms the PCM of 2021 F-150 trucks with the 3.5 L PowerBoost hybrid under bulletin 21-2053 for P2601 together with other codes. FCA lists P2601-00 for the electric coolant pump of the 2024 Dodge Hornet plug-in hybrid and cures it with control-module software. P2600, P2602 and P2603 report the electrical faults. Heating or post-shutdown cooling may suffer.
- What you may notice
- MIL on
- Weak cabin heating
- Coolant temperature stays high after shutdown
- Likely causes
- LikelyElectric pump seized, worn or running too slowly
- PossibleControl module software misjudging the pump (update available)
- PossibleAir pocket or low coolant so the pump runs dry
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.