Engine-CodesDodge – P1125 Dodge

P1125 Dodge Code - IAT Sensor Circuit Intermitten Low Voltage

Quick Answer

The P1125 diagnostic trouble code (DTC) for Dodge vehicles indicates an issue with the Intake Air Temperature (IAT) sensor circuit experiencing intermittent low voltage. Common causes include Faulty IAT sensor, Damaged wiring or connectors in the sensor circuit, Corroded sensor connector. 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
P1125 Dodge indicates IAT Sensor Circuit Intermitten Low Voltage.
Common causes
Common causes include Faulty IAT sensor, Damaged wiring or connectors in the sensor circuit, Corroded sensor connector.
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 Sep 10, 2024
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Code P1125 Dodge Description

The P1125 diagnostic trouble code (DTC) for Dodge vehicles indicates an issue with the Intake Air Temperature (IAT) sensor circuit experiencing intermittent low voltage. The IAT sensor is responsible for monitoring the temperature of the air entering the engine intake manifold. This information is crucial for the engine control module (ECM) to calculate the appropriate air-fuel mixture for combustion. A low voltage reading from the IAT sensor can lead to incorrect fuel delivery, affecting the engine's performance and efficiency.

OBDII Code P1125 Dodge - IAT Sensor Circuit Intermitten Low Voltage
P1125 Dodge Code - IAT Sensor Circuit Intermitten Low Voltage

Common Causes of P1125 Dodge

  1. Faulty IAT sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Corroded sensor connector
  4. Malfunctioning ECM

Symptoms of P1125 Dodge

  1. Check engine light illumination
  2. Rough idling or stalling
  3. Decreased fuel efficiency
  4. Engine misfires
  5. Lack of power during acceleration

How to Fix P1125 Dodge

  1. Begin by using a code reader or scan tool to confirm the P1125 code.
  2. Inspect the wiring and connectors in the IAT sensor circuit for any damage or corrosion.
  3. Test the IAT sensor using a multimeter to check for proper voltage readings.
  4. Replace the IAT sensor if it is found to be faulty.
  5. Clear the DTC and reset the ECM to see if the issue has been resolved.

Cost to Fix P1125 Dodge

The cost of repairing a P1125 code on a Dodge vehicle can vary depending on the specific cause of the issue. On average, the cost of replacing an IAT sensor ranges from $50 to $150, including parts and labor. Additional costs may apply if there are wiring or connector issues that need to be addressed. It's recommended to consult with a certified mechanic for a more accurate cost estimate based on your vehicle's make and model. Keep in mind that labor rates at auto repair shops can vary, so it's advisable to inquire about rates in your area.

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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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