P1826
Internal Mode Switch Circuit 'C' High
P1826 is an OBD-II diagnostic trouble code meaning: Internal Mode Switch Circuit 'C' High. Common causes: short circuit to power supply positive, broken or damaged wiring. Estimated repair cost: $28–89.
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
Related codes
Error P1826 by Vehicle Brand
FAQ
What does the P1826 code mean?
P1826 is an OBD-II diagnostic trouble code that indicates: Internal Mode Switch Circuit 'C' High
What causes a P1826 error code?
The most common causes of P1826 include: Short circuit to power supply positive; Broken or damaged wiring; Malfunction of the internal mode switch; Connector problems or contact corrosion.
How do I fix a P1826 diagnostic trouble code?
To fix P1826: Check the switch circuit wiring for damage.. Check the resistance of the mode switch. Inspect connectors and contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1826?
Limited driving only, diagnose soon
How much does it cost to fix P1826?
The estimated repair cost for P1826 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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