AutoCodes – Generic – P10B4

P10B4 Code - Charge Air Cooler Temperature Sensor Gradient Too High Bank 1

Quick Answer

The Engine Control Module (ECM) monitors the Charge-air Temperature Sensor. Common causes include Faulty Charge-air Temperature Sensor, Charge-air Temperature Sensor harness is open or shorted, Charge-air Temperature Sensor 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: P10B4 indicates Charge Air Cooler Temperature Sensor Gradient Too High Bank 1.
Common causes: Common causes include Faulty Charge-air Temperature Sensor, Charge-air Temperature Sensor harness is open or shorted, Charge-air Temperature Sensor 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 4,431

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 19, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P10B4 Description

The Engine Control Module (ECM) monitors the Charge-air Temperature Sensor. The ECM sets the OBDII code when the Charge-air Temperature Sensor is not to factory specifications.

OBDII Code P10B4 - Charge Air Cooler Temperature Sensor Gradient Too High Bank 1 - AutoCodes.com — P10B4 Code - Charge Air Cooler Temperature Sensor Gradient Too High Bank 1

What does this mean?

What are the Possible Causes of the DTC P10B4?

Faulty Charge-air Temperature Sensor
Charge-air Temperature Sensor harness is open or shorted
Charge-air Temperature Sensor circuit poor electrical connection

How to Fix the DTC P10B4?

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 P10B4 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 P10B4 code?

Need more information on how to fix the P10B4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P10B4 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P10B4 BMW — Charge Air Cooler Temperature Sensor Gradient Too High Bank 1
P10B4 MINI — Charge Air Cooler Temperature Sensor Gradient Too High Bank 1

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 P10B4 Code

1. What are the common symptoms of OBDII code P10B4?

Common symptoms of P10B4 may include reduced engine performance, rough idling, decreased fuel efficiency, and the illumination of the check engine light.

2. What does the OBDII code P10B4 indicate?

P10B4 indicates that the Charge Air Cooler Temperature Sensor Gradient is too high in Bank 1, which means there is an issue with the temperature sensor detecting the charge air cooler temperature.

3. What are the possible causes of OBDII code P10B4?

Possible causes of P10B4 include a faulty charge air cooler temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module.

4. How can I diagnose the cause of OBDII code P10B4?

Diagnosing P10B4 involves using a scan tool to read the code, checking the charge air cooler temperature sensor and its wiring for any visible damage, and testing the sensor's resistance and voltage to determine if it is functioning properly.

5. Can I continue driving with OBDII code P10B4 illuminated?

It is not recommended to continue driving with P10B4 illuminated, as it can lead to further damage to the engine components and potentially worsen the issue causing the code.

6. How can I repair OBDII code P10B4?

To repair P10B4, you may need to replace the charge air cooler temperature sensor, repair any damaged wiring or connectors in the sensor circuit, or reset the engine control module after fixing the underlying issue.

7. Are there any DIY tips for resolving OBDII code P10B4?

While basic diagnostics can be done at home, resolving P10B4 may require specialized tools and expertise. It is recommended to consult a professional mechanic for accurate diagnosis and repair.

8. How much does it typically cost to fix OBDII code P10B4?

The cost of fixing P10B4 can vary depending on the exact cause of the issue, the labor rates in your area, and whether you choose to replace the sensor yourself or have it done by a mechanic. Costs can range from $100 to $300 or more.

9. Can a faulty charge air cooler temperature sensor cause other problems in the vehicle?

Yes, a faulty charge air cooler temperature sensor can cause other issues such as poor engine performance, decreased fuel efficiency, and potential damage to other engine components if left unresolved.

10. Is it necessary to clear the OBDII code P10B4 after repairing the issue?

Yes, it is recommended to clear the code using a scan tool after repairing the underlying cause of P10B4. This will reset the check engine light and allow you to monitor if the issue has been successfully resolved.