U0293Lost Communication With Hybrid/EV Powertrain Control Module
- Generic OBD-II code · Network
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- The hybrid or EV powertrain control module coordinates engine, motors and high-voltage battery, so many controllers depend on its frames. Ford's 2019 hybrid OBD summary has the battery module set U0293 when HPCM messages are missing for 1 or 5 s, and the brake module set it because wheel torque data are lost; the 2014 list marks it with MIL. GM uses it in several units: the 2016 Volt VICM reacts after 500 ms as Type B, the 2018 L8B engine module after 0.5 s as Type A. Jeep cured it on the 2021 Wrangler 4xe with a TCM flash, Toyota found U029387 on the 2019–2020 RAV4 Hybrid in frost because the IGCT relay failed to power the HV ECU. Ford SSMs name connector grease and gateway software. Often the car will not start or drive.
- What you may notice
- Check engine lamp or hybrid system warning
- Vehicle does not become ready or will not start
- Stop safely now message, loss of power
- Likely causes
- LikelySupply relay or fuse of the hybrid powertrain module (e.g. IGCT relay in frost)
- LikelySoftware in the hybrid module, gateway or receiving module
- PossibleConnector fault, including grease applied to module connectors
- PossibleCAN wiring to the hybrid module damaged
- RareHybrid/EV powertrain control module internally failed
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €0 – €3,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.