AutoCodes – Generic – P1906

P1906 Code - Charge Air Coolant Pump Relay Open Circuit/Short To Ground

Quick Answer

P1906 indicates Charge Air Coolant Pump Relay Open Circuit/Short To Ground. Common causes include Faulty Charge Air Coolant Pump Relay, Charge Air Coolant Pump Relay harness is open or shorted, Charge Air Coolant Pump Relay 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: P1906 indicates Charge Air Coolant Pump Relay Open Circuit/Short To Ground.
Common causes: Common causes include Faulty Charge Air Coolant Pump Relay, Charge Air Coolant Pump Relay harness is open or shorted, Charge Air Coolant Pump Relay 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 20,803

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 27, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1906 Description

OBDII Code P1906 - Charge Air Coolant Pump Relay Open Circuit/Short To Ground - AutoCodes.com — P1906 Code - Charge Air Coolant Pump Relay Open Circuit/Short To Ground

What does this mean?

What are the Possible Causes of the DTC P1906?

Faulty Charge Air Coolant Pump Relay
Charge Air Coolant Pump Relay harness is open or shorted
Charge Air Coolant Pump Relay circuit poor electrical connection

How to Fix the DTC P1906?

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 P1906 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 P1906 code?

Need more information on how to fix the P1906 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1906 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1906 Audi — Charge Air Coolant Pump Relay Open Circuit/Short To Ground
P1906 Volkswagen — Charge Air Coolant Pump Relay Open Circuit/Short To Ground

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 P1906 Code

1. What are the common symptoms of OBDII code P1906?

The common symptoms of OBDII code P1906 include engine stalling, rough idling, poor acceleration, and illuminated Check Engine Light.

2. What does OBDII code P1906 indicate?

OBDII code P1906 indicates a Charge Air Coolant Pump Relay Open Circuit/Short To Ground error.

3. What are the possible causes of OBDII code P1906?

Possible causes of OBDII code P1906 include a faulty charge air coolant pump relay, damaged wiring or connectors, or a short circuit in the charge air coolant pump circuit.

4. How can I diagnose the issue causing OBDII code P1906?

To diagnose the issue causing OBDII code P1906, you can use a scan tool to read the code, inspect the wiring and connectors for damage, and test the charge air coolant pump relay for proper functionality.

5. Can I continue driving with OBDII code P1906?

It is not recommended to continue driving with OBDII code P1906 as it can lead to further damage to the vehicle and potential safety hazards. It is best to address the issue promptly.

6. How can I repair OBDII code P1906?

To repair OBDII code P1906, you may need to replace the faulty charge air coolant pump relay, repair any damaged wiring or connectors, and clear the code using a scan tool.

7. Is it possible to reset OBDII code P1906 without fixing the underlying issue?

Resetting OBDII code P1906 without fixing the underlying issue may temporarily turn off the Check Engine Light, but the code is likely to reappear if the root cause is not addressed.

8. Can a DIY enthusiast fix OBDII code P1906?

Depending on their skill level and access to tools, a DIY enthusiast may be able to fix OBDII code P1906 by following repair guides and procedures specific to their vehicle.

9. Will fixing OBDII code P1906 improve my vehicle's performance?

Fixing OBDII code P1906 can improve your vehicle's performance by resolving issues such as engine stalling, rough idling, and poor acceleration associated with the code.

10. How long does it typically take to repair OBDII code P1906?

The time it takes to repair OBDII code P1906 can vary based on the extent of the issue and the availability of parts. It may take anywhere from a few hours to a day for the repair to be completed.