P0815
Upshift Switch Circuit
P0815 is an OBD-II diagnostic trouble code meaning: Upshift Switch Circuit. Common causes: open or short circuit in switch circuit, malfunction of the overdrive switch itself. Estimated repair cost: $17–56.
Symptoms
- Inability to shift to higher gears
- Check Engine Light Is On
- The car goes into emergency mode
- Reduced acceleration dynamics
- Increased fuel consumption
Causes
- Open or short circuit in switch circuit
- Malfunction of the overdrive switch itself
- Problems with wiring harness or contacts
- Transmission ECU malfunction
- Corrosion or oxidation of contacts
How to Fix
- Check the continuity of the switch circuit
- Check the operation of the overdrive switch
- Inspect and, if necessary, replace the wiring harness
- Check contacts for corrosion and clean them
- Replace switch if necessary
Related codes
Error P0815 by Vehicle Brand
FAQ
What does the P0815 code mean?
P0815 is an OBD-II diagnostic trouble code that indicates: Upshift Switch Circuit
What causes a P0815 error code?
The most common causes of P0815 include: Open or short circuit in switch circuit; Malfunction of the overdrive switch itself; Problems with wiring harness or contacts; Transmission ECU malfunction.
How do I fix a P0815 diagnostic trouble code?
To fix P0815: Check the continuity of the switch circuit. Check the operation of the overdrive switch. Inspect and, if necessary, replace the wiring harness. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0815?
Limited driving only, diagnose soon
How much does it cost to fix P0815?
The estimated repair cost for P0815 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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