P0E7D code meaning
Coolant Bypass Valve B Control Circuit High
Powertrain system Generic code P0Exx codes Check engine light
What P0E7D means
P0E7D is stored when the line driving valve B sits above its expected level, for instance with the wire chafed against a powered line or a driver that cannot pull the circuit down. Stellantis names this code in the same software bulletins as its low sibling: 18-071-26 for the 2025 RAM pickup with Hurricane power, plus 18-082-26 (SO engine) and 18-083-26 (HO engine) for the 2025 Wagoneer and Grand Wagoneer. All of them require a lit check engine light, and the fix is a reflash of the engine control module, sometimes alongside oxygen sensor and airflow codes. Before replacing hardware it is therefore worth checking for such an update. CARB expects outputs like this to be checked for circuit faults. The low case is P0E7C, an open circuit P0E7B, a networked actuator that stops talking U063C.
P0E7D at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0E7D
- Check engine light
- Other stored codes after the same software issue
Common causes of P0E7D
- Most likelyOutdated engine control software (Stellantis bulletins 18-071-26, 18-082-26, 18-083-26)
- PossibleValve B control wire shorted to a voltage source
- Less likelyOpen circuit pulled high by the module input
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Coolant bypass valve bWiring harness
What each part of P0E7D means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 7D | The exact fault in that area. |
What to do next
- Note P0E7D 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 P0E7D
What does P0E7D mean?
P0E7D means "Coolant Bypass Valve B Control Circuit High". P0E7D is stored when the line driving valve B sits above its expected level, for instance with the wire chafed against a powered line or a driver that cannot pull the circuit down. It is a generic code, so it means the same on every make.
Is it safe to drive with P0E7D?
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 P0E7D fail an emissions test?
Yes, it can. P0E7D 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 P0E7D to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. This is a job for a workshop.
Will P0E7D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.