P0C74 code meaning
Motor Electronics Coolant Pump B Control Performance
Powertrain system Generic code P0Cxx codes Check engine light
What P0C74 means
P0C74 is the performance check for coolant pump B of the motor electronics, found on vehicles with a second electric pump in the power electronics cooling. The controller compares how the pump should run with how it actually runs and stores the code when the two disagree for longer than calibrated. Stellantis is the only maker found documenting it by code: for 2023-2024 Jeep Renegade and Compass 4xe with the 1.3 L plug-in hybrid, bulletins 08-165-24, 08-193-24 and 08-064-25 cure a lit MIL with P0C74 by flashing new software into the hybrid controller and the power inverter module, with no parts replaced. Where software is current, air in the loop, a worn or blocked pump and wiring faults remain. Pump A uses P0C73, pump C P2BD7.
P0C74 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.3 to 3 hours
- Clears after repairAfter a drive cycle
Symptoms of P0C74
- Malfunction indicator lamp on
- Reduced electric drive power when the electronics run hot
Common causes of P0C74
- Most likelyHybrid control or inverter module software, fixed by an update
- PossibleAir pocket in the power electronics coolant loop
- PossiblePump B worn, blocked or seized
- Less likelyDamaged wiring or corroded connector at pump B
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Motor electronics coolant pump bCoolant circuitHybrid control module
What each part of P0C74 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| C | Area: hybrid propulsion. |
| 74 | The exact fault in that area. |
What to do next
- Note P0C74 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 P0C74
What does P0C74 mean?
P0C74 means "Motor Electronics Coolant Pump B Control Performance". P0C74 is the performance check for coolant pump B of the motor electronics, found on vehicles with a second electric pump in the power electronics cooling. It is a generic code, so it means the same on every make.
Is it safe to drive with P0C74?
Drive gently and only to a workshop. With P0C74 the car can go into limp mode (reduced power) to protect itself.
Will P0C74 fail an emissions test?
Yes, it can. P0C74 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 P0C74 to fix?
Difficulty: medium. A typical repair takes 0.3 to 3 hours of work. This is a job for a workshop.
Will P0C74 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.