AutoCodes – Chevrolet – P2190 Chevrolet

P2190 Chevrolet Code - Fuel Trim System Rich At Idle Bank 2

Quick Answer

The Engine Control Module (ECM) controls the air/fuel metering system in order to provide the best possible combination of driveability, fuel economy, and emission control. Common causes include Dirty Air Filter, Dirty Mass Air Flow Sensor (MAF), Leaking fuel pressure regulator. 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: P2190 Chevrolet indicates Fuel Trim System Rich At Idle Bank 2.
Common causes: Common causes include Dirty Air Filter, Dirty Mass Air Flow Sensor (MAF), Leaking fuel pressure regulator.
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 3,388

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 Sep 12, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2190 Chevrolet Description

The Engine Control Module (ECM) controls the air/fuel metering system in order to provide the best possible combination of driveability, fuel economy, and emission control. Fuel delivery is controlled differently during Open Loop and Closed Loop. During Open Loop, the ECM determines fuel delivery based on sensor signals without heated oxygen sensor (HO2S) input. During Closed Loop, the ECM adds HO2S inputs to calculate the short and long term fuel trim (FT) adjustments. If the HO2S indicates a lean condition, the fuel trim values will be above 0 percent. If the HO2S indicates a rich condition, the FT values will be below 0 percent. The short term FT values change rapidly in response to the HO2S voltage signals. The long term FT makes coarse adjustments in order to maintain an air/fuel ratio of 14.7:1.

OBDII Code P2190 Chevrolet - Fuel Trim System Rich At Idle Bank 2 - AutoCodes.com — P2190 Chevrolet Code - Fuel Trim System Rich At Idle Bank 2

What does this mean?

What are the Possible Causes of the DTC P2190 Chevrolet?

Dirty Air Filter
Dirty Mass Air Flow Sensor (MAF)
Leaking fuel pressure regulator
Leaking fuel injector
Faulty Mass Air Flow Sensor (MAF)

How to Fix the DTC P2190 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 P2190 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.

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Need more information on how to fix the P2190 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2190 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 P2190 Chevrolet Code

1. What are the common symptoms associated with OBDII code P2190 on a Chevrolet?

- Common symptoms include rough idle, stalling at idle, decreased fuel efficiency, and a noticeable fuel smell from the exhaust.

2. What are the possible causes of OBDII code P2190 indicating a rich fuel trim system at idle on Bank 2 in a Chevrolet?

- Possible causes may include a faulty oxygen sensor, a vacuum leak, a malfunctioning fuel injector, a dirty or clogged air filter, or a problem with the fuel pressure regulator.

3. How can I diagnose the root cause of OBDII code P2190 on my Chevrolet indicating a rich fuel trim system at idle on Bank 2?

- Diagnose by checking the oxygen sensor readings, inspecting for vacuum leaks, testing fuel injector functionality, examining the air filter, and verifying proper fuel pressure regulation.

4. What are the recommended repair tips for resolving OBDII code P2190 on a Chevrolet with a rich fuel trim system at idle on Bank 2?

- Repair tips may include replacing the faulty oxygen sensor, fixing any vacuum leaks, cleaning or replacing clogged fuel injectors, replacing the air filter, and addressing issues with the fuel pressure regulator.

5. Can driving with OBDII code P2190 on a Chevrolet indicating a rich fuel trim system at idle on Bank 2 cause further damage to the vehicle?

- Continuing to drive with this code may lead to decreased engine performance, reduced fuel efficiency, and potential damage to the catalytic converter over time.

6. How much can I expect to pay to repair OBDII code P2190 on a Chevrolet with a rich fuel trim system at idle on Bank 2?

- The cost of repairs can vary depending on the specific cause of the issue, but it may range from $100 to $500 or more, including parts and labor.

7. Is it safe to continue driving my Chevrolet with OBDII code P2190 indicating a rich fuel trim system at idle on Bank 2?

- While the vehicle may still be operable with this code, it is recommended to address the underlying issue promptly to prevent potential long-term damage and ensure optimal performance.

8. How long does it typically take to repair OBDII code P2190 on a Chevrolet with a rich fuel trim system at idle on Bank 2?

- The repair time can vary based on the specific cause and complexity of the issue, but it may take a few hours to a full day to diagnose and fix the problem.

9. Can I reset the OBDII code P2190 on my Chevrolet myself after making repairs to the rich fuel trim system at idle on Bank 2?

- Yes, you can reset the code using an OBDII scanner or by disconnecting the car battery for a few minutes, but it's important to ensure the underlying issue has been resolved first.

10. Will OBDII code P2190 on a Chevrolet clear on its own over time if the rich fuel trim system at idle on Bank 2 is no longer an issue?

- The code may clear on its own if the problem is resolved and the vehicle goes through a few drive cycles without detecting the issue, but it's recommended to verify the repair with a diagnostic scan.