P0633 Mitsubishi Code - SKIM Secret Key Not Stored In PCM
Quick Answer
The P0633 diagnostic trouble code (DTC) for Mitsubishi vehicles indicates that the Secret Key Information is not stored in the Powertrain Control Module (PCM). Common causes include Faulty SKIM module, SKIM module not properly programmed, Wiring or connection issues between the SKIM module and PCM. 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
- P0633 Mitsubishi indicates SKIM Secret Key Not Stored In PCM.
- Common causes
- Common causes include Faulty SKIM module, SKIM module not properly programmed, Wiring or connection issues between the SKIM module and PCM.
- 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 P0633 Mitsubishi Description
The P0633 diagnostic trouble code (DTC) for Mitsubishi vehicles indicates that the Secret Key Information is not stored in the Powertrain Control Module (PCM). The SKIM (Sentry Key Immobilizer Module) is a security feature installed in vehicles to prevent unauthorized starting of the engine. The SKIM system uses a transponder key with a unique code that must be recognized by the PCM before the engine can start.
Common Causes of P0633 Mitsubishi
- Faulty SKIM module
- SKIM module not properly programmed
- Wiring or connection issues between the SKIM module and PCM
- PCM failure
- Dead or low battery causing loss of stored information
Symptoms of P0633 Mitsubishi
- Engine not starting or starting and then immediately stalling
- Security light illuminated on the dashboard
- Inability to turn the ignition key
- Reduced engine performance or power loss
How to Fix P0633 Mitsubishi
- Perform a diagnostic scan to confirm the P0633 code and identify the root cause of the issue.
- Check the SKIM module for faults and ensure it is properly programmed.
- Inspect the wiring and connections between the SKIM module and PCM for any damage or corrosion.
- If necessary, replace the SKIM module or PCM with a new one and reprogram it as needed.
- Clear the DTC and test the vehicle to ensure the issue has been resolved.
Cost to Fix P0633 Mitsubishi
The cost of repairing a P0633 code can vary depending on the specific cause of the issue and the extent of the repairs needed. Generally, the cost of replacing a SKIM module or PCM can range from $300 to $800, including parts and labor. Additional diagnostic fees may apply, and it is recommended to consult with a qualified mechanic to get an accurate estimate based on your vehicle's make and model. Labor rates at auto repair shops typically range from $80 to $150 per hour, but can vary based on location and other factors.
Tech Notes for P0633 Mitsubishi
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Frequently Asked Questions about P0633 Mitsubishi Code
1. What are the common symptoms of OBDII code P0633 in a Mitsubishi vehicle?
- Common symptoms include the engine not starting, the vehicle going into "limp mode," and the security light illuminating on the dashboard.
2. What does the OBDII code P0633 in a Mitsubishi mean?
- The code P0633 indicates that the Secret Key is not stored in the Powertrain Control Module (PCM), also known as the engine computer.
3. What are the potential causes of OBDII code P0633 in a Mitsubishi?
- The main causes of P0633 include a faulty ignition key, a defective immobilizer system, a communication error between the PCM and immobilizer, or a problem with the PCM itself.
4. How can I diagnose the OBDII code P0633 in my Mitsubishi?
- To diagnose P0633, you may need a professional diagnostic scanner to retrieve the trouble codes and check for any issues with the key, immobilizer system, or PCM.
5. Can I still drive my Mitsubishi with the OBDII code P0633 present?
- It is not recommended to drive your Mitsubishi with the P0633 code active, as it may lead to starting issues or vehicle stalling, depending on the severity of the problem.
6. How can I repair OBDII code P0633 in my Mitsubishi?
- Repairing P0633 typically involves reprogramming the PCM with the Secret Key, checking and reprogramming the ignition key, or replacing any faulty components in the immobilizer system.
7. Is it possible to reset the OBDII code P0633 in a Mitsubishi without professional help?
- Resetting the P0633 code may not resolve the underlying issue. It is advisable to have a qualified technician diagnose and repair the problem to prevent future starting issues.
8. Can a dead or low battery cause the OBDII code P0633 to appear in a Mitsubishi?
- Yes, a dead or low battery can sometimes trigger the P0633 code due to a loss of power to the PCM, causing it to forget the Secret Key stored in memory.
9. How long does it typically take to repair OBDII code P0633 in a Mitsubishi?
- The repair time for P0633 can vary depending on the exact cause of the issue. It may take anywhere from a few hours to a day to diagnose and repair the problem successfully.
10. Is the OBDII code P0633 specific to Mitsubishi vehicles only?
- While the P0633 code is commonly associated with Mitsubishi vehicles, it can also appear in other car makes and models that use a similar immobilizer system and PCM configuration.
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