AutoCodes – Generic – P020B

P020B 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 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.

Save to My Repairs My Repairs

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

Code Popularity 6,650

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
Add Comment

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

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

What does this mean?

What are the Possible Causes of the DTC P020B?

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?

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 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 code?

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

Need Help with the Code?

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

Information for Specific Makes

P020B Chevrolet — Cylinder 2 Injection Timing
P020B Dodge — Fuel Injector 2 Performance
P020B GMC — Cylinder 2 Injection Timing
P020B RAM — Fuel Injector 2 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 P020B Code

1. What are the common symptoms of OBDII code P020B (Cylinder 2 Injection Timing)?

- Common symptoms include rough engine idle, engine misfires, reduced fuel efficiency, and potential stalling.

2. What are the possible causes of OBDII code P020B (Cylinder 2 Injection Timing)?

- Possible causes include faulty fuel injector in cylinder 2, wiring issues in the fuel injector circuit, ECM/PCM problems, or mechanical issues in the fuel injection system.

3. How can I diagnose the OBDII code P020B (Cylinder 2 Injection Timing) at home?

- You can use an OBDII scanner to retrieve the code, visually inspect the wiring around cylinder 2, and perform a fuel injector resistance test to diagnose the issue.

4. Can a bad fuel injector cause OBDII code P020B (Cylinder 2 Injection Timing)?

- Yes, a faulty fuel injector in cylinder 2 can trigger this code, leading to problems with fuel delivery and injection timing.

5. What are some repair tips for fixing OBDII code P020B (Cylinder 2 Injection Timing)?

- Repair tips include replacing the fuel injector in cylinder 2, checking and repairing any damaged wiring or connectors, and clearing the code after completing repairs.

6. Is it safe to drive with OBDII code P020B (Cylinder 2 Injection Timing) present?

- It is not recommended to drive with this code as it can lead to engine performance issues and potential damage if left unresolved.

7. How much does it typically cost to repair OBDII code P020B (Cylinder 2 Injection Timing)?

- The cost of repairs can vary depending on the root cause, but it may range from $150 to $500 or more, including parts and labor.

8. Can I reset OBDII code P020B (Cylinder 2 Injection Timing) with a simple reset tool?

- Yes, you can attempt to clear the code using an OBDII scan tool, but it's important to address the underlying issue causing the code to prevent it from reoccurring.

9. What are the long-term effects of ignoring OBDII code P020B (Cylinder 2 Injection Timing)?

- Ignoring this code can lead to poor engine performance, increased fuel consumption, potential engine damage, and other costly repairs if not addressed promptly.

10. How can I prevent OBDII code P020B (Cylinder 2 Injection Timing) from coming back after repairs?

- To prevent the code from reoccurring, ensure proper maintenance of the fuel injection system, use high-quality fuel, and address any related issues promptly to maintain optimal engine performance.