AutoCodes – GMC – P0070 2014 GMC Sierra

P0070 2014 GMC Sierra 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 2014 GMC Sierra 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 201

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 2014 GMC Sierra 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 2014 GMC Sierra - Ambient Air Temperature Sensor Circuit - AutoCodes.com — P0070 2014 GMC Sierra Code - Ambient Air Temperature Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC P0070 2014 GMC Sierra?

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 2014 GMC Sierra?

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 2014 GMC Sierra 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 2014 GMC Sierra code?

Need more information on how to fix the P0070 2014 GMC Sierra code? Get Access to Factory Service Manuals

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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 2014 GMC Sierra Code

1. What does the OBDII code P0070 for a 2014 GMC Sierra indicate?

The OBDII code P0070 indicates a fault in the Ambient Air Temperature (AAT) sensor circuit.

2. What are the common symptoms of a P0070 code on a 2014 GMC Sierra?

Common symptoms of a P0070 code may include incorrect temperature readings on the dashboard, poor fuel efficiency, and potential issues with the HVAC system.

3. What are the possible causes of a P0070 code on a 2014 GMC Sierra?

Possible causes of a P0070 code include a faulty AAT sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning Engine Control Module (ECM).

4. How can I diagnose a P0070 code on my 2014 GMC Sierra?

Diagnosing a P0070 code typically involves checking the AAT sensor for proper operation, inspecting the wiring and connections for damage, and using a scan tool to read data from the sensor.

5. Can I drive my 2014 GMC Sierra with a P0070 code?

It is generally safe to drive with a P0070 code, but it is recommended to address the issue promptly to avoid potential performance or efficiency issues.

6. How can I repair a P0070 code on my 2014 GMC Sierra?

Repairing a P0070 code may involve replacing the Ambient Air Temperature sensor, repairing or replacing damaged wiring or connectors, or resetting the ECM after fixing the issue.

7. Can a DIY enthusiast fix a P0070 code on a 2014 GMC Sierra?

DIY enthusiasts with some experience in automotive repair may be able to address a P0070 code by following repair guides and using the necessary tools and equipment.

8. Will resetting the OBDII system clear a P0070 code on a 2014 GMC Sierra?

Resetting the OBDII system may temporarily clear the P0070 code, but if the underlying issue is not fixed, the code is likely to reappear.

9. Is it necessary to replace the Ambient Air Temperature sensor for a P0070 code on a 2014 GMC Sierra?

In many cases, replacing the faulty AAT sensor is the most effective solution for resolving a P0070 code on a 2014 GMC Sierra.

10. How can I prevent a P0070 code from recurring on my 2014 GMC Sierra?

Regularly inspecting and maintaining the Ambient Air Temperature sensor, as well as checking the sensor circuit for any damage, can help prevent a P0070 code from recurring on your 2014 GMC Sierra.