AutoCodes – Chevrolet – P0070 Chevrolet

P0070 Chevrolet Code - Ambient Air Temperature Sensor Circuit

Quick Answer

The Engine Control Module (ECM) monitors the ambient air temperature sensor with a low reference circuit and signal circuit. 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 Chevrolet indicates Ambient Air Temperature Sensor Circuit.
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 1,003

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 May 16, 2022

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

The Engine Control Module (ECM) monitors the ambient air temperature sensor with a low reference circuit and signal circuit. The ECM monitors the voltage drop across the sensor, which is inversely proportional to temperature. When the ambient air temperature is cold, the resistance of the sensor is high. When the ambient air temperature is warm, the resistance of the sensors is low. The engine control module converts the voltage value to a temperature value and sends the value to the Display Module via serial data. The Display Module displays the temperature. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the Ambient Air Temperature Sensor is not to factory specifications.

OBDII Code P0070 Chevrolet - Ambient Air Temperature Sensor Circuit - AutoCodes.com — P0070 Chevrolet Code - Ambient Air Temperature Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC P0070 Chevrolet?

Faulty Ambient Air Temperature Sensor
Ambient Air Temperature Sensor harness is open or shorted
Ambient Air Temperature Sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0070 Chevrolet?

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 Chevrolet 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 Chevrolet code?

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

Need Help with the Code?

Get the P0070 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P0070 2014 Chevrolet Silverado — Ambient Air Temperature Sensor Circuit
P0070 2015 Chevrolet Silverado — Ambient Air Temperature Sensor Circuit
P0070 2016 Chevrolet Silverado — Ambient Air Temperature Sensor Circuit
P0070 2017 Chevrolet Silverado — Ambient Air Temperature Sensor Circuit
P0070 2018 Chevrolet Silverado — Ambient Air Temperature Sensor Circuit

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 Chevrolet Code

1. What are common symptoms of OBDII code P0070 on a Chevrolet related to the Ambient Air Temperature Sensor Circuit?

The common symptoms include inaccurate temperature readings on the vehicle's display, issues with the climate control system, and potential impact on the engine performance.

2. What are the possible causes of OBDII code P0070 on a Chevrolet?

The code P0070 on a Chevrolet is often triggered by a faulty ambient air temperature sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning engine control module (ECM).

3. How can I diagnose the issue related to OBDII code P0070 on my Chevrolet?

To diagnose the issue, you can use a multimeter to test the ambient air temperature sensor's resistance, visually inspect the sensor and its wiring for any visible damage, and check for any loose or corroded connections.

4. Can I drive my Chevrolet with OBDII code P0070 present?

While it may be possible to drive your Chevrolet with the code P0070 present, it is not recommended as it can lead to inaccurate temperature readings and potential issues with the vehicle's performance.

5. How can I repair OBDII code P0070 on my Chevrolet?

Repairing OBDII code P0070 on a Chevrolet typically involves replacing the faulty ambient air temperature sensor, repairing any damaged wiring or connectors, and clearing the trouble code with an OBDII scanner.

6. Will resetting the trouble codes make OBDII code P0070 go away permanently?

Resetting the trouble codes may temporarily clear OBDII code P0070, but if the underlying issue with the ambient air temperature sensor circuit is not addressed, the code is likely to reappear.

7. Can a DIY enthusiast fix OBDII code P0070 on a Chevrolet?

Depending on your skill level and access to tools, a DIY enthusiast may be able to fix OBDII code P0070 by replacing the ambient air temperature sensor and inspecting the wiring for any damage.

8. How important is the ambient air temperature sensor for overall vehicle operation?

The ambient air temperature sensor plays a crucial role in providing accurate temperature readings to the vehicle's systems, which can impact the climate control, fuel efficiency, and overall engine performance.

9. Is it necessary to replace the ambient air temperature sensor if it is found faulty?

Yes, it is recommended to replace the ambient air temperature sensor if it is found to be faulty, as a malfunctioning sensor can lead to inaccurate temperature readings and potential issues with the vehicle's systems.

10. Can extreme weather conditions affect the performance of the ambient air temperature sensor?

Yes, extreme weather conditions such as extreme heat or cold can affect the performance of the ambient air temperature sensor, leading to inaccurate readings and triggering OBDII code P0070 on a Chevrolet.