P2601 code meaning
Coolant Pump A Control Circuit Performance/Stuck Off
Powertrain system Generic code P26xx codes Check engine light
What P2601 means
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.
P2601 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.3 to 3 hours
- Clears after repairAfter a drive cycle
Symptoms of P2601
- MIL on
- Weak cabin heating
- Coolant temperature stays high after shutdown
Common causes of P2601
- Most 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
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Coolant pump aPump motor
What each part of P2601 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 6 | Area: computer (engine control module) and output circuits. |
| 01 | The exact fault in that area. |
What to do next
- Note P2601 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2601
What does P2601 mean?
P2601 means "Coolant Pump A Control Circuit Performance/Stuck Off". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with P2601?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P2601 fail an emissions test?
Yes, it can. P2601 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2601 to fix?
Difficulty: medium. A typical repair takes 0.3 to 3 hours of work. This is a job for a workshop.
Will P2601 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.