OBD-II code · Powertrain (generic, extended)
P26FD A/C Compressor Internal Control Module Performance
The internal control module of an electrically driven A/C compressor (typical on hybrid and BEV vehicles) reports an internal performance fault. Compressor capacity may be reduced or shut down.
Is it safe to drive with P26FD?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyInternal fault in compressor inverter electronics
- PossibleSoftware error in compressor control logic
- Less likelyModule software outdated, reflash may resolve
Symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–6 h
- Emissions test
- Usually unaffected
- Parts involved
- Electric AC Compressor, Compressor Inverter
Related codes
- P26FACoolant Pump C Overspeed/Air in System
- P26FBEGR Cooler Bypass Control Stuck Closed Bank 1
- P26FCEGR Cooler Bypass Control Stuck Closed Bank 2
- P26FEExhaust Flow Control Valve A Control Performance
- P26FFAuto Configuration Throttle Input Not Present Bank 2
- P2700Transmission Friction Element A Apply Time Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.