C0265EBCM Relay Circuit
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- C0265 does not appear in the published J2012 lists; it belongs to GM's numbering. PIP5094, GM's terminal-check bulletin for 2014 and older vehicles, includes it, and in AA1Car's listing of GM ABS faults it is EBCM Relay Circuit, matching the title. GM does not publish the setting rule for this number. The task of such a relay is described in a Hella/Lucas patent: one contact switches battery voltage to all ABS valves, and the module watches both coil current and the voltage behind the contact. If either is wrong, the relay is dropped, the valves lose power, and the car brakes conventionally without ABS while the warning lamp is lit. Check fuses, relay contacts and the module ground before replacing the brake module.
- What you may notice
- ABS warning lamp on, ABS disabled
- Traction control unavailable on equipped vehicles
- Likely causes
- LikelyBlown fuse or poor battery feed to the relay
- PossibleBurnt or sticking relay contacts (internal relay in later modules)
- PossiblePoor ground at the brake control module
- Repair
- Medium · Often possible to do yourself.Typical cost: €20 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.