P2778
Upshift Switch Circuit Intermittent/Erratic
P2778 is an OBD-II diagnostic trouble code meaning: Upshift Switch Circuit Intermittent/Erratic. Common causes: overdrive switch malfunction, open or short circuit in the circuit. Estimated repair cost: $17–56.
Symptoms
- Incorrect gear shifting
- Upshift delay
- Check Engine Light Is On
- The car may go into emergency gearbox mode
Causes
- Overdrive switch malfunction
- Open or short circuit in the circuit
- Poor contact in connectors
- Problems with the transmission control module
How to Fix
- Check the condition of the overdrive switch
- Inspect the chain for breaks or damage
- Check contacts in connectors
- Scan the transmission control module for errors
Related codes
Error P2778 by Vehicle Brand
FAQ
What does the P2778 code mean?
P2778 is an OBD-II diagnostic trouble code that indicates: Upshift Switch Circuit Intermittent/Erratic
What causes a P2778 error code?
The most common causes of P2778 include: Overdrive switch malfunction; Open or short circuit in the circuit; Poor contact in connectors; Problems with the transmission control module.
How do I fix a P2778 diagnostic trouble code?
To fix P2778: Check the condition of the overdrive switch. Inspect the chain for breaks or damage. Check contacts in connectors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2778?
Yes, but get it checked soon
How much does it cost to fix P2778?
The estimated repair cost for P2778 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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