AutoCodes – Generic – P219D

P219D Code - No. 2 Cylinder Air-Fuel Ratio Variation

Quick Answer

The Powertrain Control Module (PCM) detects the imbalance amount from the sizes of the 0.5-order and 1.0-order components compared to 0.8-order excitation input by the fuel injection to determine the air/fuel ratio variation between the cylinders. Common causes include Faulty fuel injector, Fuel rail clogged, Intake manifold air leak/clogged. 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: P219D indicates No. 2 Cylinder Air-Fuel Ratio Variation.
Common causes: Common causes include Faulty fuel injector, Fuel rail clogged, Intake manifold air leak/clogged.
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 7,308

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 Oct 18, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P219D Description

The Powertrain Control Module (PCM) detects the imbalance amount from the sizes of the 0.5-order and 1.0-order components compared to 0.8-order excitation input by the fuel injection to determine the air/fuel ratio variation between the cylinders. The obtained components are used to learn the fuel coefficient of each cylinder and performs the imbalance reduction control. If it is not possible to suppress the variation even if the imbalance reduction control is performed; resulting the imbalance amount is large and the fuel coefficient is a specified value or more, the PCM detects as imbalance failure and the Diagnostic Trouble Code (DTC) will set.

OBDII Code P219D - No. 2 Cylinder Air-Fuel Ratio Variation - AutoCodes.com — P219D Code - No. 2 Cylinder Air-Fuel Ratio Variation

What does this mean?

What are the Possible Causes of the DTC P219D?

Faulty fuel injector
Fuel rail clogged
Intake manifold air leak/clogged
Cam lift failure
Ignition system failure
Engine compression abnormal
Valve clearance incorrect

How to Fix the DTC P219D?

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 P219D 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 P219D code?

Need more information on how to fix the P219D code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P219D code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P219D Acura — No. 2 Cylinder Air-Fuel Ratio Variation
P219D Honda — No. 2 Cylinder Air-Fuel Ratio Variation
P219D Lexus — Cylinder 2 Air-Fuel Ratio Imbalance
P219D Scion — Cylinder 2 Air-Fuel Ratio Imbalance
P219D Toyota — Cylinder 2 Air-Fuel Ratio Imbalance

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 P219D Code

1. What are the common symptoms of OBDII code P219D (No. 2 Cylinder Air-Fuel Ratio Variation)?

The common symptoms include rough idling, engine misfires, decreased fuel efficiency, and a noticeable lack of power during acceleration.

2. What are the potential causes of OBDII code P219D?

Possible causes of P219D include a faulty oxygen sensor, issues with the fuel injector in the No. 2 cylinder, vacuum leaks, or problems with the engine's air intake system.

3. How can I diagnose the source of OBDII code P219D?

Diagnosing P219D typically involves using a scan tool to read the code and then conducting further testing to check the oxygen sensor, fuel injector, vacuum lines, and air intake components related to the No. 2 cylinder.

4. Can a dirty or clogged fuel injector cause OBDII code P219D?

Yes, a dirty or clogged fuel injector in the No. 2 cylinder can disrupt the air-fuel ratio and trigger code P219D. Regular maintenance and cleaning of fuel injectors can help prevent this issue.

5. Is it safe to continue driving with OBDII code P219D present?

It is not recommended to drive with code P219D present, as it can lead to potential engine damage and further issues if left unresolved. It is best to address the underlying problem promptly.

6. How can I fix OBDII code P219D at home?

Simple DIY fixes for P219D may include checking for vacuum leaks, cleaning the fuel injector, inspecting the oxygen sensor, and ensuring secure connections in the air intake system. However, more complex issues may require professional assistance.

7. Will resetting the OBDII code P219D make it go away permanently?

Resetting the code may temporarily turn off the Check Engine Light, but if the underlying issue causing P219D is not addressed, the code is likely to reappear. It is crucial to diagnose and fix the root cause of the problem.

8. Can a malfunctioning oxygen sensor trigger OBDII code P219D?

Yes, a malfunctioning oxygen sensor, particularly the one associated with the No. 2 cylinder, can cause an incorrect air-fuel ratio and lead to the activation of code P219D.

9. How important is it to address OBDII code P219D promptly?

It is essential to address code P219D promptly to prevent potential damage to the engine, ensure optimal fuel efficiency, and maintain overall vehicle performance. Ignoring the code can lead to more severe issues over time.

10. Can driving with a misfiring engine contribute to triggering OBDII code P219D?

Yes, driving with a misfiring engine can disrupt the air-fuel ratio in the affected cylinder, potentially leading to code P219D being triggered. Addressing engine misfires promptly can help prevent this code from appearing.