P0E7F code meaning
Coolant Bypass Valve B Control Stuck/Open
Powertrain system Generic code P0Exx codes Check engine light
What P0E7F means
P0E7F means coolant bypass valve B is judged to stay open while the module wants it closed. Stellantis documents it on the Chrysler Pacifica plug-in hybrid with the 3.6 litre engine: bulletin 07-008-23 (June 2023) covers cars built from 3 November 2022 to 10 February 2023, where machining debris from the cylinder head water jackets can collect inside the three-way valve. The MIL comes on and electric driving may be locked out while the gasoline engine still works. To reproduce it, the bulletin has the car idle 10 minutes in engine mode, then run 5 minutes on battery with heat on and the blower below half; if P0E7F or P0E80 appears, the valve is replaced. The Hurricane software bulletins also list the code. P0E80 is the stuck closed case; P0E79 is the same fault on valve A.
P0E7F at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 2 hours
- Clears after repairAfter a drive cycle
Symptoms of P0E7F
- MIL on
- Electric drive mode unavailable, engine runs instead
- Reduced or unstable cabin heat
Common causes of P0E7F
- Most likelyMachining debris lodged in the three-way coolant valve (Pacifica Hybrid, bulletin 07-008-23)
- PossibleWorn or broken internals in valve B
- Less likelyCalibration issue addressed by an engine control update (3.0 Hurricane)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Coolant bypass valve bCooling system
What each part of P0E7F means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 7F | The exact fault in that area. |
What to do next
- Note P0E7F 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 P0E7F
What does P0E7F mean?
P0E7F means "Coolant Bypass Valve B Control Stuck/Open". P0E7F means coolant bypass valve B is judged to stay open while the module wants it closed. It is a generic code, so it means the same on every make.
Is it safe to drive with P0E7F?
Drive gently and only to a workshop. With P0E7F the car can go into limp mode (reduced power) to protect itself.
Will P0E7F fail an emissions test?
Yes, it can. P0E7F 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 P0E7F to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. This is a job for a workshop.
Will P0E7F 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.