P0201 Code - Injector Circuit Malfunction Cylinder 1

Quick Answer

When the OBD-II code P0201 appears, it indicates a malfunction in the injector circuit of cylinder 1 in the vehicle's engine. Common causes include Faulty fuel injector, Wiring issues in the injector circuit, Injector circuit short or open circuit. 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

P0201 indicates Injector Circuit Malfunction Cylinder 1.

Common causes

Common causes include Faulty fuel injector, Wiring issues in the injector circuit, Injector circuit short or open circuit.

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
• Tech Notes
• FAQs
• Comments
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Common Causes of P0201

Symptoms of P0201

How to Fix P0201

Cost to Fix P0201

Tech Notes for P0201

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Code P0201 Information for Specific Makes

• P0201 Acura — No. 1 Cylinder Injector Circuit Malfunction
• P0201 BMW — Cylinder 1 Fuel Injector Circuit Open
• P0201 Buick — Cylinder 1 Injector Control Circuit
• P0201 Cadillac — Cylinder 1 Injector Control Circuit
• P0201 Chevrolet — Cylinder 1 Injector Control Circuit
• P0201 Chrysler — Fuel Injector 1 Circuit Open
• P0201 Dodge — Fuel Injector 1 Circuit Open
• P0201 Ford — Injector Circuit Malfunction Cylinder 1
• P0201 GMC — Cylinder 1 Injector Control Circuit
• P0201 Honda — No. 1 Cylinder Injector Circuit Malfunction
• P0201 Hyundai — Injector Circuit Open- Cylinder 1
• P0201 Isuzu — Injector 1 Control Circuit
• P0201 Jaguar — Injector Circuit Malfunction Cylinder 1
• P0201 Jeep — Fuel Injector 1 Circuit Open
• P0201 KIA — Injector Circuit Open- Cylinder 1
• P0201 Lexus — Injector Circuit Open Cylinder 1
• P0201 Lincoln — Injector Circuit Malfunction Cylinder 1
• P0201 Mazda — Injector Circuit Open- Cylinder 1
• P0201 Mercedes-Benz — Injector Circuit/Open Cylinder 1
• P0201 Mercury — Injector Circuit Malfunction Cylinder 1
• P0201 MINI — Cylinder 1 Fuel Injector Circuit Open
• P0201 Mitsubishi — Injector Circuit Cylinder 1
• P0201 Nissan — Number 1 Fuel Injector Circuit Open
• P0201 Pontiac — Cylinder 1 Injector Control Circuit
• P0201 Saturn — Cylinder 1 Injector Control Circuit
• P0201 Volkswagen — Injector Circuit Open Cylinder 1

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 P0201 Code

1. What are the common symptoms of OBDII code P0201 (Injector Circuit Malfunction Cylinder 1)?

The common symptoms of P0201 include rough idling, misfires in cylinder 1, decreased fuel efficiency, and potentially stalling of the engine.

2. What are the possible causes of OBDII code P0201?

Possible causes of P0201 include a faulty fuel injector in cylinder 1, wiring issues in the injector circuit, a poor electrical connection, or a problem with the Engine Control Module (ECM).

3. How can I diagnose the cause of OBDII code P0201?

Diagnosing P0201 involves checking the fuel injector in cylinder 1 for proper operation, inspecting the wiring for any damage or loose connections, and using a scan tool to analyze the injector circuit's performance.

4. Can a dirty fuel injector trigger code P0201?

Yes, a dirty or clogged fuel injector in cylinder 1 can disrupt the injector circuit's operation, potentially triggering code P0201. Regular maintenance and cleaning of fuel injectors can help prevent this issue.

5. Is it safe to drive with OBDII code P0201 active?

It is not recommended to drive with code P0201 active, as it can lead to engine performance issues and further damage if left unaddressed. It is best to address the underlying problem promptly.

6. Can I reset OBDII code P0201 without fixing the issue?

While you can clear the code temporarily using an OBDII scanner, the underlying problem causing P0201 will persist. It is crucial to resolve the issue triggering the code to prevent further complications.

7. Are there any DIY repair tips for fixing OBDII code P0201?

DIY repair tips for P0201 include checking and cleaning the fuel injector, inspecting the injector circuit wiring for damage, ensuring proper electrical connections, and testing the ECM for any faults.

8. How much does it typically cost to repair OBDII code P0201?

The cost of repairing P0201 can vary depending on the underlying cause. Simple fixes like cleaning a fuel injector or repairing wiring may cost less, while replacing a faulty injector or ECM can be more expensive.

9. Can weather or temperature affect the occurrence of OBDII code P0201?

Extreme weather conditions or temperature fluctuations can potentially impact the performance of fuel injectors and electrical connections, leading to the triggering of code P0201 in cylinder 1.

10. Will OBDII code P0201 cause permanent damage to the engine if not resolved promptly?

Continued operation with code P0201 can potentially cause permanent damage to the engine, especially if the issue involves a malfunctioning fuel injector. It is advisable to address the problem promptly to prevent further harm.