U061ELost Communication With Battery Isolation/Voltage Stabilization Control Module
- Generic OBD-II code · Network
- How the car detects it
- A battery isolation or voltage stabilization module separates a second 12 V battery or protected loads from the starter circuit, so that cranking during an automatic restart does not drag the voltage of the rest of the vehicle down. A GM patent (US 9,803,608) describes such an isolator built from MOSFET switches. U061E means the powertrain controller has lost contact with this module. Ford documents it on 2021 and 2022 F-150 trucks with the 3.5 L PowerBoost hybrid (special service message SSM 50843): U061E, often with P2C44, turns on the powertrain malfunction (wrench) lamp rather than the check-engine light. Ford blames a poor ground circuit GD132 or a failed auxiliary battery isolator and wants the ground and the auxiliary battery tested before the isolator is replaced. U041A covers invalid data from the same module.
- What you may notice
- Powertrain malfunction (wrench) lamp on Ford trucks
- Additional battery or isolator code such as P2C44
- Likely causes
- LikelyPoor ground connection of the isolator circuit (Ford ground GD132)
- PossibleWeak or deeply discharged auxiliary battery
- PossibleBattery isolator module itself failed
- RareCommunication wire or connector to the module damaged
- 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.