P0703 Mitsubishi Code - Stop Lamp Switch System Malfunction
Quick Answer
The P0703 diagnostic trouble code (DTC) for Mitsubishi vehicles specifically refers to a malfunction in the stop lamp switch system. Common causes include Faulty stop lamp switch, Wiring or connection issues, Brake pedal misalignment. 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
- P0703 Mitsubishi indicates Stop Lamp Switch System Malfunction.
- Common causes
- Common causes include Faulty stop lamp switch, Wiring or connection issues, Brake pedal misalignment.
- 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.
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Code P0703 Mitsubishi Description
The P0703 diagnostic trouble code (DTC) for Mitsubishi vehicles specifically refers to a malfunction in the stop lamp switch system. The stop lamp switch is a crucial component of the vehicle's brake system, as it is responsible for activating the brake lights when the brake pedal is pressed. When this switch malfunctions, it can lead to various issues that affect the overall performance and safety of the vehicle.
Common Causes of P0703 Mitsubishi
- Faulty stop lamp switch
- Wiring or connection issues
- Brake pedal misalignment
- Corrosion or damage to the switch components
- Electronic control module (ECM) malfunction
Symptoms of P0703 Mitsubishi
- Brake lights not turning on when the brake pedal is pressed
- Inability to shift out of park
- Dashboard warning lights related to the brake system
- Cruise control not working properly
- Vehicle experiencing intermittent stalling
How to Fix P0703 Mitsubishi
- Diagnose the issue by checking the stop lamp switch and related wiring for any visible damage or wear.
- Test the continuity of the stop lamp switch using a multimeter to determine if it is functioning properly.
- If the switch is faulty, replace it with a new one and ensure proper alignment and connection.
- Clear the DTC from the vehicle's computer system using an OBD-II scanner.
- Test the brake lights and ensure they are working correctly after the repair.
Cost to Fix P0703 Mitsubishi
The cost of repairing a P0703 code for the stop lamp switch system malfunction can vary depending on the severity of the issue and the specific components that need to be replaced. On average, the cost of parts for this repair can range from $50 to $150, while labor costs can range from $80 to $150 per hour. Overall, the total repair cost for this issue can typically range from $150 to $300. It is important to keep in mind that labor rates can vary based on location and the type of repair facility, so it is advisable to obtain a detailed quote from a trusted auto repair shop before proceeding with the repair.
Tech Notes for P0703 Mitsubishi
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Frequently Asked Questions about P0703 Mitsubishi Code
1. What does the OBDII code P0703 mean for a Mitsubishi?
P0703 indicates a malfunction in the Stop Lamp Switch System, which monitors the brake pedal's position and communicates it to the vehicle's control modules.
2. What are the symptoms of code P0703 in a Mitsubishi?
Common symptoms include brake lights not functioning properly, difficulty shifting gears, or the transmission staying in limp mode.
3. What causes the P0703 code on a Mitsubishi?
Potential causes include a faulty stop lamp switch, damaged wiring or connectors, or a blown fuse related to the brake light circuit.
4. Can a bad stop lamp switch affect the transmission on a Mitsubishi?
Yes, the stop lamp switch is linked to the transmission control system, so a malfunction can cause issues like the transmission staying in limp mode or gear shifting problems.
5. How do I diagnose code P0703 on a Mitsubishi?
Inspect the stop lamp switch, check the brake light functionality, examine wiring and connectors for damage, and test the circuit for continuity using a multimeter.
6. Can I drive my Mitsubishi with the P0703 code?
Driving with this code is not recommended as it may affect braking system signals and transmission operation, compromising safety and vehicle performance.
7. How can I fix the P0703 code on my Mitsubishi?
Replace the stop lamp switch if faulty, repair or replace damaged wiring or connectors, and ensure the brake light circuit fuse is functioning correctly.
8. How much does it cost to fix the P0703 code in a Mitsubishi?
Repair costs vary but typically range from $50 to $150 for parts and labor, depending on the extent of the issue and the model of the vehicle.
9. Can a blown brake light fuse trigger the P0703 code in a Mitsubishi?
Yes, a blown brake light fuse can interrupt the stop lamp switch signal and cause the P0703 code to appear.
10. How do I reset the P0703 code on a Mitsubishi after repairs?
Use an OBDII scanner to clear the code after addressing the issue, or disconnect the battery for a few minutes to reset the vehicle’s ECU.
Discuss the causes and fixes for P0703 Mitsubishi OBDII Code
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Trunk stop light work, others do not. Fuse is ok. Can´t find the issue. I assume brake light switch works since the trunk stop light works as well. What I´m missing?
Lamps are ok.
Mitsubishi Lancer 2008 AT. -
You have to check the wire from the stop light to the join connector.
Here is the stop light wire diagram:
Click here to enlarge image
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