P1826
Internal Mode Switch Circuit 'C' High
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$28–89 (est.)
Symptoms
- Incorrect detection of gear selector position
- The gearbox only works in one gear
- Transmission fault indicator flashes
- The car does not move in the mode selected by the shift lever
- Lack of response to mode switching
Causes
- Short circuit to power supply positive
- Broken or damaged wiring
- Malfunction of the internal mode switch
- Connector problems or contact corrosion
- Transmission control unit malfunction
How to Fix
- Check the switch circuit wiring for damage.
- Check the resistance of the mode switch
- Inspect connectors and contacts for corrosion
- Check for short circuit to positive
- If necessary, replace the faulty mode switch