OBD-II code · Powertrain (generic, extended)
P26C3 Internal Control Module Transmission Range Sensor Performance
The internal transmission range sensor inside the control module (used for redundancy on shift-by-wire systems) does not match the external sensor reading.
Is it safe to drive with P26C3?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- PossibleInternal sensor drift
- PossibleExternal range sensor drift
- Less likelySensor element aged beyond calibration window
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Control Module, External Range Sensor
Related codes
- P26C0Engine Coolant Bypass Valve D Stuck/Open
- P26C1Engine Coolant Bypass Valve D Range/Performance
- P26C2Engine Coolant Bypass Valve D Stuck Closed
- P26C4Internal Control Module Clutch Pedal Performance
- P26C5Exhaust Flow Control Valve A Control Circuit / Open
- P26C6Exhaust Flow Control Valve A Control Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.