P2C49 code meaning
Coolant Pump D Control Circuit Performance/Stuck Off
Powertrain system Generic code P2Cxx codes Check engine light
What P2C49 means
P2C49 is the functional check of coolant pump D: the command arrives and the control line is intact, but the pump does not run or does not reach the effect the module expects. No manufacturer publicly documents P2C49. GM shows the method on pump C with P2C48: its diesel tables derive an expected phase current from the measured pump speed and set a type B fault once the difference persists for about 5 seconds. Ford's 2024 gasoline summary carries the same fault type for its auxiliary pumps A and B (P2601, P261B), monitored continuously above 11 V. Which loop pump D serves depends on the vehicle, often a second low-temperature or component circuit. Causes include a seized impeller, air, a weak motor or wiring resistance. The circuit it cools then runs hotter.
P2C49 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairAfter a drive cycle
Symptoms of P2C49
- Check engine light
- Higher temperature in the circuit served by pump D
- Possible power reduction to protect components
Common causes of P2C49
- Most likelyAir in the loop or low coolant after a leak or repair
- PossibleSeized or worn pump D
- PossibleHigh resistance in supply, ground or control wiring
- Less likelyControl module software judging the pump wrongly
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Coolant pump dWiring harnessECM
What each part of P2C49 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| C | Area: hybrid propulsion. |
| 49 | The exact fault in that area. |
What to do next
- Note P2C49 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 P2C49
What does P2C49 mean?
P2C49 means "Coolant Pump D Control Circuit Performance/Stuck Off". P2C49 is the functional check of coolant pump D: the command arrives and the control line is intact, but the pump does not run or does not reach the effect the module expects. It is a generic code, so it means the same on every make.
Is it safe to drive with P2C49?
Drive gently and only to a workshop. With P2C49 the car can go into limp mode (reduced power) to protect itself.
Will P2C49 fail an emissions test?
Yes, it can. P2C49 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 P2C49 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P2C49 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.