P1825
Internal Mode Switch Invalid Range
P1825 is an OBD-II diagnostic trouble code meaning: Internal Mode Switch Invalid Range. Common causes: malfunction of the internal mode switch, problems with the wiring harness to the switch. Estimated repair cost: $28–167.
Symptoms
- Incorrect display of gear selector position on the dashboard
- Gear shifting problems
- Car will not start in 'P' or 'N' position
- The gearbox goes into emergency mode
- Check Engine light comes on
Causes
- Malfunction of the internal mode switch
- Problems with the wiring harness to the switch
- Poor contact in connectors
- Transmission control module (TCM) malfunction
- Mechanical damage to the switch
How to Fix
- Check the condition of the wiring harness and connectors
- Test the resistance of the mode switch
- Check switch signals using a scanner
- If necessary, replace the internal mode switch
- Reflash or replace the TCM module if necessary
Related codes
Error P1825 by Vehicle Brand
FAQ
What does the P1825 code mean?
P1825 is an OBD-II diagnostic trouble code that indicates: Internal Mode Switch Invalid Range
What causes a P1825 error code?
The most common causes of P1825 include: Malfunction of the internal mode switch; Problems with the wiring harness to the switch; Poor contact in connectors; Transmission control module (TCM) malfunction.
How do I fix a P1825 diagnostic trouble code?
To fix P1825: Check the condition of the wiring harness and connectors. Test the resistance of the mode switch. Check switch signals using a scanner. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1825?
Limited driving only, diagnose soon
How much does it cost to fix P1825?
The estimated repair cost for P1825 is $28–167. Actual cost depends on your vehicle, location, and labor rates.
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