P26B7Engine Coolant Bypass Valve C Control Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P26B7 is the basic electrical test of the drive output for coolant bypass valve C, with an open load as its main case. The letter is not tied to one design. Ford defines valve C as the radiator bypass in the 2020–2023 and 2024–2025 editions of its gasoline OBD summary and logs P26B7 (in 2024 also as P26B7_13) once the PCM's smart driver reports an output fault, checked continuously over 5 s. Ford bulletin 16-0052 covers 2013 Escape 1.6L EcoBoost cars built up to 13 February 2013: replace the bypass valve, then reflash the PCM. GM powers its valve C through an H-bridge and stores the code after 4 s of open load within a 5 s window, Type B, in its 2019 L3B table and two 2025 tables. P26B8/P26B9 are the shorted cases. Warm-up and temperature control may suffer.
- What you may notice
- Check engine light
- Engine warms up slowly or runs warmer than usual
- Valve C stays in its default position
- Likely causes
- LikelyFailed actuator motor or coil inside bypass valve C
- PossibleUnplugged, corroded or broken connector or drive wire
- PossibleEngine harness chafed through near the valve
- RareOutdated engine control software (Ford 2013 Escape 1.6L)
- 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: €50 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.