AutoCodes – Generic – P10C9

P10C9 Code - Cold Start Intake Air Temperature Too High Bank 1

Quick Answer

The Engine Control Module (ECM) monitors the Intake-Air Temperature Sensor. Common causes include Faulty Intake-Air Temperature Sensor, Intake-Air Temperature Sensor harness is open or shorted, Intake-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: P10C9 indicates Cold Start Intake Air Temperature Too High Bank 1.
Common causes: Common causes include Faulty Intake-Air Temperature Sensor, Intake-Air Temperature Sensor harness is open or shorted, Intake-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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,678

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P10C9 Description

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

OBDII Code P10C9 - Cold Start Intake Air Temperature Too High Bank 1 - AutoCodes.com — P10C9 Code - Cold Start Intake Air Temperature Too High Bank 1

What does this mean?

What are the Possible Causes of the DTC P10C9?

Faulty Intake-Air Temperature Sensor
Intake-Air Temperature Sensor harness is open or shorted
Intake-Air Temperature Sensor circuit poor electrical connection

How to Fix the DTC P10C9?

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 P10C9 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 P10C9 code?

Need more information on how to fix the P10C9 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P10C9 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P10C9 BMW — Cold Start Intake Air Temperature Too High Bank 1
P10C9 MINI — Cold Start Intake Air Temperature 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 P10C9 Code

1. What are the common symptoms of OBDII code P10C9 (Cold Start Intake Air Temperature Too High Bank 1)?

- Common symptoms include engine stalling, rough idling, decreased fuel efficiency, and potential check engine light illumination.

2. What are the possible causes of OBDII code P10C9?

- Possible causes include a faulty intake air temperature sensor, issues with the intake air temperature sensor circuit, or problems with the engine control module (ECM).

3. How can I diagnose OBDII code P10C9?

- Diagnosing this code typically involves using an OBDII scanner to read the trouble code, checking the intake air temperature sensor for proper function, and inspecting the wiring and connections related to the sensor.

4. Can a dirty air filter trigger OBDII code P10C9?

- Yes, a dirty or clogged air filter can disrupt the intake air temperature readings, potentially leading to the triggering of code P10C9.

5. What are some repair tips for addressing OBDII code P10C9?

- Repair tips may include replacing the intake air temperature sensor, repairing or replacing damaged wiring, ensuring proper sensor connections, and cleaning or replacing the air filter.

6. Is it safe to continue driving with OBDII code P10C9 present?

- It is generally not recommended to continue driving with this code present, as it can negatively impact engine performance and fuel efficiency. It's best to address the underlying issue promptly.

7. Can extreme weather conditions contribute to triggering OBDII code P10C9?

- Yes, extreme cold weather can sometimes cause the intake air temperature to be falsely detected as too high, triggering the code. Ensuring proper insulation and functioning of the sensor can help mitigate this issue.

8. How much does it typically cost to repair OBDII code P10C9?

- The cost of repairing this code can vary depending on the exact cause and the labor rates in your area. In general, the cost may range from $100 to $300 for parts and labor.

9. Can a DIY enthusiast fix OBDII code P10C9 at home?

- Depending on the underlying cause, some DIY enthusiasts with automotive repair experience may be able to address this code at home by following proper diagnostic procedures and utilizing basic tools.

10. Will resetting the trouble codes make OBDII code P10C9 disappear permanently?

- Resetting the trouble codes may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear after the vehicle goes through another cold start cycle.