Powertrain
Definition only
Lights the check engine lamp
P26C3: Internal Control Module Transmission Range Sensor Performance
Standardized SAE J2012 code · P26xx — Computer and output circuits
What does P26C3 mean?
The internal transmission range sensor inside the control module (used for redundancy on shift-by-wire systems) does not match the external sensor reading.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
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
Common causes
- Medium Internal sensor drift
- Medium External range sensor drift
- Low Sensor element aged beyond calibration window
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P26C3 on the same make and model first.
P26C3 in the community
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