P1823
Internal Mode Switch Circuit 'P' Low
P1823 is an OBD-II diagnostic trouble code meaning: Internal Mode Switch Circuit 'P' Low. Common causes: malfunction of the internal mode switch, open or short circuit in switch circuit. Estimated repair cost: $17–89.
Symptoms
- Engine does not start in 'P' position
- Incorrect display of the current mode on the instrument panel
- Gear shifting problems
- Check Engine Light Is On
- Activating emergency transmission mode
Causes
- Malfunction of the internal mode switch
- Open or short circuit in switch circuit
- Poor contact in connectors
- Problems with the transmission control unit
- Mechanical damage to the wiring harness
How to Fix
- Check the condition of the wiring harness and connectors
- Test internal mode switch
- Check the continuity of the switch circuit
- Scan the transmission control module for additional fault codes
- If necessary, replace the switch or repair the wiring
Related codes
Error P1823 by Vehicle Brand
FAQ
What does the P1823 code mean?
P1823 is an OBD-II diagnostic trouble code that indicates: Internal Mode Switch Circuit 'P' Low
What causes a P1823 error code?
The most common causes of P1823 include: Malfunction of the internal mode switch; Open or short circuit in switch circuit; Poor contact in connectors; Problems with the transmission control unit.
How do I fix a P1823 diagnostic trouble code?
To fix P1823: Check the condition of the wiring harness and connectors. Test internal mode switch. Check the continuity of the switch circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1823?
Limited driving only, diagnose soon
How much does it cost to fix P1823?
The estimated repair cost for P1823 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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