AutoCodes – Dodge – P226B Dodge

P226B Dodge Code - Turbocharger Boost Pressure Too High - Mechanical

Quick Answer

The Variable Geometry Turbocharger (VGT) adjusts turbocharger performance by moving the position of the impeller nozzle, on the high-pressure (engine exhaust gas) side of the turbocharger assembly. Common causes include Powertrain Control Module (PCM) calibration update, Soot build-up on turbocharger, Faulty Electronic Turbo Actuator. 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: P226B Dodge indicates Turbocharger Boost Pressure Too High - Mechanical.
Common causes: Common causes include Powertrain Control Module (PCM) calibration update, Soot build-up on turbocharger, Faulty Electronic Turbo Actuator.
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 3,273

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 Jul 25, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P226B Dodge Description

The Variable Geometry Turbocharger (VGT) adjusts turbocharger performance by moving the position of the impeller nozzle, on the high-pressure (engine exhaust gas) side of the turbocharger assembly. The desired position of the actuator is commanded from the Powertrain Control Module (PCM). The actual position is sensed by the VGT and reported back to the PCM as feedback. Discrepancy in position feedback sent to the module, and commanded position sent to the VGT by more than a prescribed amount will result in failure of device rationality diagnostics. Failure to properly actuate the VGT will result in poor engine performance. The PCM lights the MIL lamp after the diagnostic runs and fails in two drive cycles. The PCM will turn off the MIL lamp immediately after this diagnostic runs and passes in four consecutive drive cycles. The Diagnostic Trouble Code (DTC) will be set when the turbo position is not within the commanded position during desoot or the difference between charge flow and charge flow command is over the calibrated limit.

OBDII Code P226B Dodge - Turbocharger Boost Pressure Too High - Mechanical - AutoCodes.com — P226B Dodge Code - Turbocharger Boost Pressure Too High - Mechanical

What does this mean?

What are the Possible Causes of the DTC P226B Dodge?

Powertrain Control Module (PCM) calibration update
Soot build-up on turbocharger
Faulty Electronic Turbo Actuator
Faulty turbocharger

How to Fix the DTC P226B Dodge?

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 P226B Dodge 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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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 P226B Dodge Code

1. What does the P226B code mean on a Dodge vehicle?

The P226B code indicates that the turbocharger boost pressure is too high due to a mechanical issue, such as a stuck wastegate or other turbo-related problem.

2. What are the common symptoms of the P226B code?

Symptoms may include reduced engine performance, excessive turbo noise, poor fuel efficiency, black smoke from the exhaust, and the Check Engine Light being illuminated.

3. What causes the P226B code to appear?

Common causes include a stuck or malfunctioning wastegate, a faulty turbocharger actuator, a clogged or damaged intercooler, or issues with the boost pressure sensor.

4. Can I drive my Dodge with the P226B code?

It is not recommended to drive with this code active, as excessive boost pressure can damage the engine or turbocharger components.

5. How is the P226B code diagnosed?

A mechanic will use an OBD-II scanner to confirm the code, inspect the turbocharger system, check for mechanical issues in the wastegate or actuator, and test the boost pressure sensor.

6. What repairs are typically required for the P226B code?

Repairs may include cleaning or replacing the turbo wastegate, replacing a faulty boost pressure sensor, fixing leaks in the intake system, or repairing the turbocharger.

7. How much does it cost to fix the P226B code on a Dodge?

Repair costs can range from $150 for sensor replacement to over $1,000 if the turbocharger or wastegate requires repair or replacement.

8. Can a dirty air filter cause the P226B code?

A dirty air filter is unlikely to cause this specific code, but it can indirectly contribute to turbocharger issues by restricting airflow.

9. Will resetting the Check Engine Light solve the P226B code?

Resetting the light without addressing the underlying mechanical issue will not solve the problem, and the code is likely to return.

10. How can I prevent the P226B code from occurring?

Regular maintenance, including checking the turbocharger components, replacing the air filter, and ensuring proper oil changes, can help prevent this code from occurring.