P0815 Honda Code - Short In Transmission Gear Selection Switch Upshift/Dowshift Switch Circuit
Quick Answer
The Transmission Control Module (TCM) monitors the Upshift Switch Circuit signal. Common causes include Faulty Transmission Gear Selection Switch, Transmission Gear Selection Switch harness is open or shorted, Transmission Gear Selection Switch circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0815 Honda indicates Short In Transmission Gear Selection Switch Upshift/Dowshift Switch Circuit.
- Common causes
- Common causes include Faulty Transmission Gear Selection Switch, Transmission Gear Selection Switch harness is open or shorted, Transmission Gear Selection Switch circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0815 Honda Description
What are the Possible Causes of the DTC P0815 Honda?
- Faulty Transmission Gear Selection Switch
- Transmission Gear Selection Switch harness is open or shorted
- Transmission Gear Selection Switch circuit poor electrical connection
How to Fix the DTC P0815 Honda?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0815 Honda code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0815 Honda Code
1. What does the OBDII code P0815 mean on a Honda?
P0815 indicates a short in the circuit related to the transmission gear selection switch, specifically in the upshift/downshift switch circuit.
2. What are the common symptoms of the P0815 code on a Honda?
Common symptoms include erratic shifting, transmission stuck in one gear, illuminated check engine light, and poor vehicle performance.
3. What causes the P0815 code to appear on a Honda?
Potential causes include damaged wiring, short circuits in the gear selection switch circuit, a faulty transmission gear selection switch, or a malfunctioning transmission control module (TCM).
4. Can I still drive my Honda if the P0815 code is triggered?
While the vehicle may still be drivable, it could experience shifting issues that may worsen over time. It’s best to address the issue promptly to avoid further damage.
5. How do I diagnose the P0815 code on a Honda?
Diagnosis involves scanning for trouble codes, inspecting the wiring and connectors for damage or shorts, and testing the gear selection switch and related circuits for proper operation.
6. How do I fix the P0815 code on a Honda?
Repairs may include replacing damaged wiring, repairing short circuits, replacing the transmission gear selection switch, or reprogramming or replacing the TCM if necessary.
7. How much does it cost to fix the P0815 code on a Honda?
Repair costs vary depending on the cause, but wiring repairs may cost $100–$300, while replacing the gear selection switch could cost $200–$500, including labor.
8. Can a faulty TCM cause the P0815 code on a Honda?
Yes, a malfunctioning transmission control module can cause this code, although wiring or switch issues are more common culprits.
9. How is the P0815 code related to the gear selection switch?
The P0815 code is triggered when the transmission control module detects a short circuit in the upshift or downshift switch circuit, which is part of the gear selection switch system.
10. Will clearing the P0815 code fix the issue on my Honda?
Clearing the code may temporarily turn off the warning light, but the root cause of the issue must be addressed to prevent the code from returning.
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