Engine Coolant Bypass Valve "B" Control Circuit Short to Battery
Ford · engine
Data confidence94%
Ford documents P26AC:12 (circuit short to battery) for its 2024-2025 gasoline-engine OBD monitor strategy as engine coolant bypass valve "b" control circuit short to battery. This three-byte interpretation is application-specific and identifies the detected monitor condition rather than a confirmed failed component.
Recommended checks
Perform a full module scan
Review freeze-frame and occurrence data
Inspect relevant wiring and connectors
Check power supplies and grounds
Check applicable OEM service information
Applies toFord gasoline-engine OBD applications|2024-2025 model years
P26AC:13
Engine Coolant Bypass Valve "B" Control Circuit
Ford · engine
Data confidence94%
Ford documents P26AC:13 (circuit open) for its 2024-2025 gasoline-engine OBD monitor strategy as engine coolant bypass valve "b" control circuit. This three-byte interpretation is application-specific and identifies the detected monitor condition rather than a confirmed failed component.
Recommended checks
Perform a full module scan
Review freeze-frame and occurrence data
Inspect relevant wiring and connectors
Check power supplies and grounds
Compare commanded and measured values
Check applicable OEM service information
Applies toFord gasoline-engine OBD applications|2024-2025 model years
Powertrain: engine, transmission and driveline systems.
2
Generic SAE-standard code: same meaning on every make.
6AC
Specific fault index within the subsystem.
Frequently asked questions about P26AC
What does P26AC mean?
Diagnostic Trouble Code (2 variants). Ford documents P26AC:12 (circuit short to battery) for its 2024-2025 gasoline-engine OBD monitor strategy as engine coolant bypass valve "b" control circuit short to battery. This three-byte interpretation is application-specific and identifies the detected monitor condition rather than a confirmed failed component.
Is P26AC generic or manufacturer-specific?
P26AC exists both as a generic OBD-II code (same meaning on every make) and with 1 manufacturer-specific interpretation(s): Ford. Always read it in the context of your vehicle.
Can TuningBot remove P26AC at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
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