P0601 Code - Control Module Read Only Memory

Quick Answer

The P0601 diagnostic trouble code (DTC) indicates a malfunction in the vehicle's Engine Control Module (ECM) or Powertrain Control Module (PCM) read-only memory (ROM). Common causes include Electrical issues, such as a short circuit or voltage spikes, Faulty ECM/PCM, Corrupted ROM data. 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

P0601 indicates Control Module Read Only Memory.

Common causes

Common causes include Electrical issues, such as a short circuit or voltage spikes, Faulty ECM/PCM, Corrupted ROM data.

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.

• Description
• Common Causes
• Symptoms
• How To Fix
• Cost to Fix
• FAQs
• Comments
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Common Causes of P0601

Symptoms of P0601

How to Fix P0601

Cost to Fix P0601

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Code P0601 Information for Specific Makes

• P0601 BMW — ECM Self Check Fault
• P0601 Buick — Control Module Read Only Memory Performance
• P0601 Cadillac — Control Module Read Only Memory Performance
• P0601 Chevrolet — Control Module Read Only Memory Performance
• P0601 Chrysler — Power Control Module Internal Fault
• P0601 Dodge — Power Control Module Internal Fault
• P0601 GMC — Control Module Read Only Memory Performance
• P0601 Hummer — Power Control Module Internal Fault
• P0601 Isuzu — Internal Control Module Memory Check Sum Error
• P0601 Jeep — Power Control Module Internal Fault
• P0601 KIA — Internal Control Module Memory Check Sum Error
• P0601 Mazda — Internal Control Module Memory Check Sum Error
• P0601 Mercedes-Benz — Control Module Read Only Memory
• P0601 MINI — ECM Self Check Fault
• P0601 Pontiac — Power Control Module Internal Fault
• P0601 RAM — Power Control Module Internal Fault
• P0601 Saab — Control Module Read Only Memory
• P0601 Saturn — Power Control Module Internal Fault
• P0601 Toyota — Control Module Performance
• P0601 Volkswagen — Internal Control Module Memory Check Sum Error

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0601 Code

1. What is OBDII code P0601?

- OBDII code P0601 refers to a Control Module Read Only Memory (ROM) error detected in the vehicle's engine control module (ECM).

2. What are the common symptoms of OBDII code P0601?

- Common symptoms include the check engine light being illuminated, engine performance issues, stalling, and difficulties starting the vehicle.

3. What are some possible causes of OBDII code P0601?

- The code can be triggered by a faulty ECM, a corrupted or damaged ECM software, low voltage to the ECM, or wiring issues.

4. How is OBDII code P0601 diagnosed?

- The code is diagnosed using a professional OBDII scanner to retrieve the specific error code and further testing to identify the root cause of the issue.

5. Can OBDII code P0601 be repaired?

- Repairing the issue involves addressing the root cause, which may include reprogramming the ECM, replacing the ECM, checking and repairing wiring issues, or ensuring proper voltage supply to the ECM.

6. Are there any DIY repair tips for OBDII code P0601?

- DIY repair is not recommended for this code due to the complexity involved in diagnosing and repairing ECM-related issues. It is advisable to seek professional help.

7. Is it safe to continue driving with OBDII code P0601?

- It is not recommended to drive the vehicle with this code illuminated as it can lead to further damage and potential safety hazards. It is best to address the issue promptly.

8. How much does it typically cost to repair OBDII code P0601?

- The cost of repairing this code can vary depending on the root cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can OBDII code P0601 be intermittent?

- Yes, the code can sometimes be intermittent, meaning it may appear and disappear sporadically. However, it still indicates an underlying issue that needs to be addressed.

10. How long does it take to repair OBDII code P0601?

- The repair time can vary based on the specific cause of the code and the complexity of the repair. It may take a few hours to a day or more to fully diagnose and fix the issue.