AutoCodes – BMW – P0070 BMW

P0070 BMW Code - Ambient Air Temperature Sensor Malfunction

Quick Answer

The Powertrain Control Module (PCM) monitors the Ambient Air Temperature Sensor. Common causes include Faulty ambient air temperature sensor, Ambient air temperature sensor harness is open or shorted, Ambient 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: P0070 BMW indicates Ambient Air Temperature Sensor Malfunction.
Common causes: Common causes include Faulty ambient air temperature sensor, Ambient air temperature sensor harness is open or shorted, Ambient 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 28,100

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 25, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0070 BMW Description

The Powertrain Control Module (PCM) monitors the Ambient Air Temperature Sensor. The PCM sets the OBDII code when the Ambient Air Temperature Sensor is not to factory specifications.

OBDII Code P0070 BMW - Ambient Air Temperature Sensor Malfunction - AutoCodes.com — P0070 BMW Code - Ambient Air Temperature Sensor Malfunction

What does this mean?

What are the Possible Causes of the DTC P0070 BMW?

Faulty ambient air temperature sensor
Ambient air temperature sensor harness is open or shorted
Ambient air temperature sensor circuit poor electrical connection

How to Fix the DTC P0070 BMW?

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 P0070 BMW 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 P0070 BMW code?

Need more information on how to fix the P0070 BMW code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P0070 BMW Code

1. What are the common symptoms of a malfunctioning ambient air temperature sensor in a BMW with OBDII code P0070?

The common symptoms include inaccurate temperature readings on the dashboard, erratic climate control behavior, and potential impact on fuel efficiency.

2. What are the potential causes of OBDII code P0070 indicating an ambient air temperature sensor malfunction in a BMW?

The potential causes can range from a faulty ambient air temperature sensor, wiring issues, to a problem with the sensor's connection or placement.

3. How can I diagnose the ambient air temperature sensor issue triggering OBDII code P0070 in my BMW?

You can diagnose the issue by visually inspecting the sensor, checking the sensor's wiring and connector for any damage, and using a multimeter to test the sensor's resistance.

4. Is it safe to continue driving my BMW with OBDII code P0070 until I can repair the ambient air temperature sensor issue?

It is generally safe to drive, but it's important to address the issue promptly as it can impact the vehicle's performance and fuel efficiency over time.

5. Can I replace the ambient air temperature sensor in my BMW myself to resolve OBDII code P0070?

Replacing the sensor is usually a straightforward task that can be done at home with basic tools. However, if you're not confident in your abilities, it's best to consult a professional mechanic.

6. Will resetting the OBDII code P0070 on my BMW make the issue with the ambient air temperature sensor go away?

Resetting the code may temporarily clear the warning light, but if the underlying issue with the sensor is not addressed, the code is likely to reappear.

7. How much does it typically cost to replace an ambient air temperature sensor in a BMW experiencing OBDII code P0070?

The cost of replacing the sensor can vary depending on the model of your BMW and whether you choose to do it yourself or have a mechanic perform the replacement. Generally, the part itself is not very expensive.

8. Can a malfunctioning ambient air temperature sensor causing OBDII code P0070 affect other systems in my BMW?

Yes, a malfunctioning sensor can impact the climate control system, engine performance, and fuel efficiency in your BMW due to inaccurate temperature readings.

9. Are there any preventative measures I can take to avoid triggering OBDII code P0070 due to ambient air temperature sensor issues in my BMW?

Regularly inspecting the sensor for damage or corrosion, ensuring proper connection, and keeping the sensor clean can help prevent issues that trigger the OBDII code.

10. How urgent is it to address OBDII code P0070 related to an ambient air temperature sensor malfunction in my BMW?

While it may not require immediate attention, it's important to address the issue promptly to prevent potential long-term effects on your BMW's performance and fuel efficiency.