U0287Lost Communication With Transmission Fluid Pump Module A
- Generic OBD-II code · Network
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- An electric transmission fluid pump with its own control electronics keeps hydraulic pressure available whenever the engine stands still, in auto stop or electric driving. Stellantis calls it transmission fluid pump module 1; the TCM sets U0287 when it stops responding. On 2021–2025 Jeep Wrangler and Grand Cherokee 4xe, TSB 21-041-26 links the code with MIL and limp mode to a failed in-pan pump, and 08-082-25 traces cases to a damaged high-voltage cable whose noise reaches the pump circuit. The 2026 Compass with 8F30 gets a new pump and TCM software (21-058-26), with stop-start off and a service transmission message. Hyundai sets U028700 in the pump itself on the 2.5 Santa Fe and Tucson with eight-speed automatic, disabling Idle Stop and Go (26-AT-002H).
- What you may notice
- Malfunction indicator lamp and service transmission or hybrid message
- Engine stop-start disabled
- Limp mode on plug-in hybrids
- Likely causes
- LikelyElectric fluid pump or its integrated electronics failed
- PossiblePump connector not fully latched
- PossibleDamaged high-voltage cable inducing interference on the pump circuit (hybrids)
- RareTransmission control module software outdated
- 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: €150 – €1,800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.