P1799
Hold Switch Circuit Malfunction
P1799 is an OBD-II diagnostic trouble code meaning: Hold Switch Circuit Malfunction. Common causes: hold switch malfunction, open or short circuit in switch circuit. Estimated repair cost: $17–89.
Symptoms
- Hold function does not work
- Transmission does not shift properly
- Check Engine light comes on
- The car may go into emergency gearbox mode
Causes
- Hold switch malfunction
- Open or short circuit in switch circuit
- Poor contact in wiring connectors
- Transmission control module (TCM) malfunction
- Chain ground problems
How to Fix
- Check the status of the Hold switch
- Check the integrity of the wiring and connectors in the switch circuit
- Check voltage and resistance in the circuit
- Check the operation of the transmission control unit
- If necessary, replace the switch or repair the wiring
Related codes
Error P1799 by Vehicle Brand
FAQ
What does the P1799 code mean?
P1799 is an OBD-II diagnostic trouble code that indicates: Hold Switch Circuit Malfunction
What causes a P1799 error code?
The most common causes of P1799 include: Hold switch malfunction; Open or short circuit in switch circuit; Poor contact in wiring connectors; Transmission control module (TCM) malfunction.
How do I fix a P1799 diagnostic trouble code?
To fix P1799: Check the status of the Hold switch. Check the integrity of the wiring and connectors in the switch circuit. Check voltage and resistance in the circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1799?
Limited driving only, diagnose soon
How much does it cost to fix P1799?
The estimated repair cost for P1799 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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