AutoCodes – Generic – P020C

P020C Code - Cylinder 3 Injection Timing

Quick Answer

The Engine Control Module (ECM) has the ability to learn injector timing performance. Common causes include Faulty Fuel Injector 3, Fuel Injector 3 harness is open or shorted, Fuel Injector 3 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: P020C indicates Cylinder 3 Injection Timing.
Common causes: Common causes include Faulty Fuel Injector 3, Fuel Injector 3 harness is open or shorted, Fuel Injector 3 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.

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Code Popularity 11,810

How popular is this code, among other codes? Low

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 22, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P020C Description

The Engine Control Module (ECM) has the ability to learn injector timing performance. When the engine is at operating temperature, throttle closed and in deceleration fuel cut-off mode, the ECM will pulse each injector individually and measure the changes in rotational speed of the crankshaft using the input from the crankshaft position sensor. The ECM will run this diagnostic at one fuel rail pressure operating point for each injector. The ECM stores the injector timing value. The Diagnostic Trouble Code (DTC) will be set when the time to build up sufficient current to open the injector is below or above a predetermined threshold.

OBDII Code P020C - Cylinder 3 Injection Timing - AutoCodes.com — P020C Code - Cylinder 3 Injection Timing

What does this mean?

What are the Possible Causes of the DTC P020C?

Faulty Fuel Injector 3
Fuel Injector 3 harness is open or shorted
Fuel Injector 3 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P020C?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P020C 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 P020C code?

Need more information on how to fix the P020C code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P020C code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P020C Chevrolet — Cylinder 3 Injection Timing
P020C Dodge — Fuel Injector 3 Performance
P020C GMC — Cylinder 3 Injection Timing
P020C RAM — Fuel Injector 3 Performance

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 P020C Code

1. What does OBDII code P020C mean?

P020C indicates a problem with the injection timing for cylinder 3, often related to the fuel injector's performance or its electrical circuit.

2. What are the common symptoms of code P020C?

Symptoms may include rough engine idle, reduced power, poor fuel efficiency, engine misfires, or the check engine light illuminating.

3. What causes code P020C to appear?

Common causes include a faulty fuel injector, damaged wiring or connectors, a malfunctioning injector driver in the PCM, or low fuel pressure.

4. Can I still drive my car with a P020C code?

Driving with a P020C code is not recommended as it can lead to engine misfiring, reduced performance, and potential damage to the catalytic converter.

5. How do I diagnose a P020C code?

Diagnostics involve checking the fuel injector for cylinder 3, inspecting wiring and connectors, testing the injector driver in the PCM, and verifying fuel pressure.

6. How is a P020C code typically fixed?

Repairs may include replacing the faulty fuel injector, repairing damaged wiring or connectors, or replacing the PCM if the injector driver is defective.

7. Can a clogged fuel injector cause a P020C code?

Yes, a clogged or restricted fuel injector can disrupt proper injection timing and trigger the code.

8. How much does it cost to fix a P020C code?

The cost varies but may range from $150 to $500 depending on whether the issue is with the injector, wiring, or PCM.

9. Will clearing the code fix the problem?

Clearing the code without addressing the underlying issue will not fix the problem, and the code will likely return.

10. Can a bad PCM cause a P020C code?

Yes, a malfunctioning PCM can cause this code if it fails to properly control the injector timing for cylinder 3.

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