Engine-CodesChrysler – P0070 Chrysler

P0070 Chrysler Code - Ambient Air Temperature Signal Voltage Too High/Low

Quick Answer

The P0070 Chrysler code indicates that the ambient air temperature signal voltage is either too high or too low, causing a discrepancy in the reading received by the vehicle's computer system. Common causes include Faulty ambient air temperature sensor, Wiring issues or poor connections in the sensor circuit, Corrosion or damage to the sensor. 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 Chrysler indicates Ambient Air Temperature Signal Voltage Too High/Low.
Common causes
Common causes include Faulty ambient air temperature sensor, Wiring issues or poor connections in the sensor circuit, Corrosion or damage to the sensor.
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.
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code P0070 Chrysler Description

The P0070 Chrysler code indicates that the ambient air temperature signal voltage is either too high or too low, causing a discrepancy in the reading received by the vehicle's computer system. The ambient air temperature sensor is responsible for providing the engine control module (ECM) with data on the outside air temperature, which is crucial for various functions such as fuel mixture control, emission control, and climate control. When the voltage from the sensor deviates from the normal range, it can lead to incorrect calculations and affect the vehicle's performance.

OBDII Code P0070 Chrysler - Ambient Air Temperature Signal Voltage Too High/Low
P0070 Chrysler Code - Ambient Air Temperature Signal Voltage Too High/Low

Common Causes of P0070 Chrysler

  1. Faulty ambient air temperature sensor
  2. Wiring issues or poor connections in the sensor circuit
  3. Corrosion or damage to the sensor
  4. ECM software malfunction
  5. Environmental factors affecting sensor performance (e.g., extreme temperatures)

Symptoms of P0070 Chrysler

  1. Inaccurate temperature readings on the dashboard display
  2. Incorrect climate control operation
  3. Engine running too rich or too lean
  4. Poor fuel efficiency
  5. Check Engine Light illuminated

How to Fix P0070 Chrysler

  1. Begin by diagnosing the issue using a scan tool to confirm the P0070 code and check the ambient air temperature sensor's data.
  2. Inspect the sensor and its wiring for any visible damage, corrosion, or loose connections. Replace or repair as needed.
  3. Test the sensor's resistance and voltage output to ensure it is functioning within specifications.
  4. Clear the code and reset the ECM to see if the issue persists. Drive the vehicle to monitor for any recurrence of the code.
  5. If the problem persists, consider replacing the ambient air temperature sensor or seeking further diagnostic testing from a professional mechanic.

Cost to Fix P0070 Chrysler

The repair costs for addressing a P0070 Chrysler code can vary depending on the specific cause of the issue. In general, replacing an ambient air temperature sensor can range from $50 to $150 for the part itself. Labor costs can add an additional $80 to $150 per hour, and the total repair bill may amount to around $150 to $300. Keep in mind that prices can fluctuate based on location, vehicle make and model, and the shop's labor rates. It's advisable to obtain quotes from multiple repair facilities to ensure a competitive price.

When is the Code Detected?

The Engine Control Module (ECM) has detected an open or short circuit condition on the Ambient Air Temperature (AAT) sensor circuit.

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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.

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