P0E80Coolant Bypass Valve B Control Stuck Closed
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0E80 reports that bypass valve B has stayed shut although flow through it is requested. Stellantis gives the criterion for the Jeep Wrangler plug-in hybrid (2021 to 2023): the code sets once engine coolant and the inlet of the electric coolant heater differ by more than 40 °F, about 22 K. Its service case S2208000205 and bulletin 07-006-23 (cars built on 4 June 2022) trace this to hoses on the three-way valve that were fitted one port off; drivers notice a lit check engine light and at times no heat, and the fix is rerouting the hoses using the marks on the valve. On the 2022 to 2023 Pacifica plug-in hybrid, bulletin 07-008-23 blames a valve clogged by machining debris and replaces it. CARB covers such outputs under functional monitoring. P0E7F is the open counterpart.
- What you may notice
- Check engine light
- Intermittent loss of cabin heat
- Electric mode may be disabled
- Likely causes
- LikelyHoses at the three-way valve shifted by one port (Wrangler 4xe, bulletin 07-006-23)
- PossibleValve blocked by machining debris (Pacifica Hybrid, bulletin 07-008-23)
- RareValve B actuator seized in the closed position
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €100 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.