AutoCodes – Generic – P0202

P0202 Code - Injector Circuit Malfunction Cylinder 2

Quick Answer

The Engine Control Module (ECM) supplies voltage to each fuel injector on the high control circuits. Common causes include Faulty Fuel Injector 2, Fuel Injector 2 harness is open or shorted, Fuel Injector 2 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: P0202 indicates Injector Circuit Malfunction Cylinder 2.
Common causes: Common causes include Faulty Fuel Injector 2, Fuel Injector 2 harness is open or shorted, Fuel Injector 2 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 49,393

How popular is this code, among other codes? Medium

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 23, 2024

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0202 Description

The Engine Control Module (ECM) supplies voltage to each fuel injector on the high control circuits. The ECM energizes each fuel injector by grounding the low control circuit of the fuel injector. The ECM monitors the status of the fuel injector circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injector(s) is disabled. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the fuel injector control circuit is open for greater than 2 s.

OBDII Code P0202 - Injector Circuit Malfunction Cylinder 2 - AutoCodes.com — P0202 Code - Injector Circuit Malfunction Cylinder 2

What does this mean?

What are the Possible Causes of the DTC P0202?

Faulty Fuel Injector 2
Fuel Injector 2 harness is open or shorted
Fuel Injector 2 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0202?

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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0202 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.

Need more information about the P0202 code?

Need more information on how to fix the P0202 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0202 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P0202 Acura — No. 2 Cylinder Injector Circuit Malfunction
P0202 BMW — Cylinder 2 Fuel Injector Circuit Open
P0202 Buick — Cylinder 2 Injector Control Circuit
P0202 Cadillac — Cylinder 2 Injector Control Circuit
P0202 Chevrolet — Cylinder 2 Injector Control Circuit
P0202 Chrysler — Fuel Injector 2 Circuit Open
P0202 Dodge — Fuel Injector 2 Circuit Open
P0202 Ford — Injector Circuit Malfunction Cylinder 2
P0202 GMC — Cylinder 2 Injector Control Circuit
P0202 Honda — No. 2 Cylinder Injector Circuit Malfunction
P0202 Hyundai — Injector Circuit Open- Cylinder 2
P0202 Isuzu — Injector 2 Control Circuit
P0202 Jaguar — Injector Circuit Malfunction Cylinder 2
P0202 Jeep — Fuel Injector 2 Circuit Open
P0202 KIA — Injector Circuit Open- Cylinder 2
P0202 Lexus — Injector Circuit Open Cylinder 2
P0202 Lincoln — Injector Circuit Malfunction Cylinder 2
P0202 Mazda — Injector Circuit Open Cylinder 2
P0202 Mercedes-Benz — Injector Circuit/Open Cylinder 2
P0202 Mercury — Injector Circuit Malfunction Cylinder 2
P0202 MINI — Cylinder 2 Fuel Injector Circuit Open
P0202 Mitsubishi — Injector Circuit Cylinder 2
P0202 Nissan — Number 2 Fuel Injector Circuit Open
P0202 Pontiac — Cylinder 2 Injector Control Circuit
P0202 Saturn — Cylinder 2 Injector Control Circuit
P0202 Volkswagen — Injector Circuit Open Cylinder 2

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 P0202 Code

1. What does the OBDII code P0202 mean?

P0202 indicates an injector circuit malfunction in cylinder 2, meaning the engine control module (ECM) has detected an issue with the fuel injector or its circuit in that specific cylinder.

2. What are the symptoms of code P0202?

Common symptoms include engine misfires, reduced power, rough idle, poor fuel economy, and an illuminated check engine light.

3. What causes the P0202 code?

Possible causes include a faulty fuel injector, damaged wiring or connectors in the injector circuit, a malfunctioning ECM, or poor electrical connections.

4. Can you drive with a P0202 code?

Driving with a P0202 code is not recommended as it can cause misfires, reduced performance, and potential damage to the catalytic converter if left unresolved.

5. How is the P0202 code diagnosed?

A technician will check the injector wiring and connectors, test the resistance of the fuel injector, and use a scan tool to monitor injector operation and confirm the issue.

6. How do you fix the P0202 code?

Repairs may include replacing the faulty fuel injector, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the ECM if needed.

7. Can a bad fuel injector cause the P0202 code?

Yes, a bad or clogged fuel injector can cause the P0202 code by preventing proper fuel delivery to cylinder 2.

8. What tools are needed to troubleshoot the P0202 code?

Common tools include a multimeter, a scan tool, a noid light to test injector pulse, and sometimes an oscilloscope for more advanced diagnostics.

9. Can a vacuum leak cause the P0202 code?

A vacuum leak is unlikely to directly cause P0202, but it may contribute to related performance issues that should also be addressed.

10. How much does it typically cost to fix a P0202 code?

The cost varies depending on the repair, ranging from $100 to $300 for wiring or connector repairs, and $200 to $500 or more for replacing a faulty injector.