P1823
Internal Mode Switch Circuit 'P' Low
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)
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