P1780
Transmission Control Switch Out of Self-Test Range
P1780 is an OBD-II diagnostic trouble code meaning: Transmission Control Switch Out of Self-Test Range. Common causes: transmission control switch malfunction, open or short circuit in switch circuit. Estimated repair cost: $17–89.
Symptoms
- Incorrect display of the current gear on the instrument panel
- Automatic transmission does not change operating modes
- Check Engine Light Is On
- The gearbox goes into emergency mode
- Problems with shifting gears in manual mode (if any)
Causes
- Transmission control switch malfunction
- Open or short circuit in switch circuit
- Poor contact in switch connectors
- Transmission Control Module (TCM) Problems
- Mechanical damage to the gear selector
How to Fix
- Check the condition of the transmission control switch
- Check the integrity of the switch circuit and connectors
- Scan the TCM for additional trouble codes
- If necessary, replace the transmission control switch
- Check and replace the TCM if necessary
Related codes
Error P1780 by Vehicle Brand
FAQ
What does the P1780 code mean?
P1780 is an OBD-II diagnostic trouble code that indicates: Transmission Control Switch Out of Self-Test Range
What causes a P1780 error code?
The most common causes of P1780 include: Transmission control switch malfunction; Open or short circuit in switch circuit; Poor contact in switch connectors; Transmission Control Module (TCM) Problems.
How do I fix a P1780 diagnostic trouble code?
To fix P1780: Check the condition of the transmission control switch. Check the integrity of the switch circuit and connectors. Scan the TCM for additional trouble codes. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1780?
Yes, but get it checked soon
How much does it cost to fix P1780?
The estimated repair cost for P1780 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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