U3014Control Module Input Power D Circuit/Open
- Generic OBD-II code · Network
- How the car detects it
- U3014 is the fourth member of the input power series and means feed D of a module is absent or open. Four separate feeds are rare, so the code appears mainly on central body controllers or power distribution units with several power stages. As with U3013, no maker publishes a definition for it, and the letter only follows that module's pin plan. Where maker data exists for the A and B codes, the supplies are compared with one another, as in GM's brake module, or a single feed must reach a minimum voltage before a load test. Mazda's SA-023-23 shows how a drained battery leaves supply codes in several modules at once, which is why a single D entry is better explained by its own fuse or pin. Not emission-relevant; whether a lamp lights depends on the module.
- What you may notice
- Individual consumers or functions of the module not working
- Often stored together with other input power codes after a battery problem
- Likely causes
- LikelyBlown fuse feeding input D
- PossibleLoose terminal or damaged wire on supply D
- RareFlat battery, then usually with further supply codes in other modules
- Repair
- Medium · Often possible to do yourself.Typical cost: €10 – €300
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.