AutoCodes – Chevrolet – P020B Chevrolet

P020B Chevrolet Code - Cylinder 2 Injection Timing

Quick Answer

The Engine Control Module (ECM) has the ability to learn injector timing performance. 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: P020B Chevrolet indicates Cylinder 2 Injection Timing.
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.

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Code Popularity 564

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 P020B Chevrolet 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 P020B Chevrolet - Cylinder 2 Injection Timing - AutoCodes.com — P020B Chevrolet Code - Cylinder 2 Injection Timing

What does this mean?

What are the Possible Causes of the DTC P020B Chevrolet?

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 P020B Chevrolet?

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 P020B Chevrolet 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 P020B Chevrolet code?

Need more information on how to fix the P020B Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P020B Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P020B 2014 Chevrolet Silverado — Cylinder 2 Injection Timing
P020B 2015 Chevrolet Silverado — Cylinder 2 Injection Timing
P020B 2016 Chevrolet Silverado — Cylinder 2 Injection Timing
P020B 2017 Chevrolet Silverado — Cylinder 2 Injection Timing
P020B 2018 Chevrolet Silverado — Cylinder 2 Injection Timing

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 P020B Chevrolet Code

1. What does the OBDII code P020B mean on a Chevrolet?

P020B indicates a problem with the injection timing for cylinder 2, typically related to the fuel injector or its control circuit.

2. What are the common symptoms of code P020B in a Chevrolet?

Symptoms may include rough idling, misfires, poor fuel economy, reduced performance, and an illuminated check engine light.

3. What causes the P020B code on a Chevrolet?

Common causes include a faulty fuel injector, wiring issues in the injector circuit, a malfunctioning PCM (Powertrain Control Module), or fuel delivery problems.

4. Can I drive my Chevrolet with a P020B code?

Itâ€™s not recommended to drive for long with this code, as it can lead to engine damage, reduced performance, and potential safety issues.

5. How do I diagnose the P020B code on a Chevrolet?

Start by checking the wiring and connectors for cylinder 2's fuel injector for damage or corrosion. Then, test the fuel injector itself and assess the PCM functionality.

6. How can I fix the P020B code on a Chevrolet?

Repairs may include replacing the faulty injector, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming/replacing the PCM if necessary.

7. How much does it cost to fix the P020B code on a Chevrolet?

Repair costs vary, but replacing a fuel injector typically costs $200â€“$400, while wiring repairs or PCM replacement can range from $100 to $1,200 depending on the issue.

8. Can a dirty fuel injector cause a P020B code?

Yes, a clogged or dirty fuel injector can disrupt injection timing and trigger the P020B code.

9. Will resetting the check engine light clear the P020B code?

Clearing the code without addressing the underlying issue will only temporarily turn off the light; the code will likely return until repairs are made.

10. What tools are needed to troubleshoot a P020B code on a Chevrolet?

Youâ€™ll need an OBDII scanner, a multimeter to test electrical circuits, and possibly fuel system cleaning tools or testing equipment for the injector.