P0127 Chrysler Code - Intake Air Temperature Too High
Quick Answer
The Intake Air Temperature (IAT) sensor is variable temperature sensitive resistor that measures the temperature of the air in the intake system. Common causes include Faulty Intake Air Temperature (IAT) sensor, Intake Air Temperature (IAT) sensor harness is open or shorted, Intake Air Temperature (IAT) sensor electrical circuit poor 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
- P0127 Chrysler indicates Intake Air Temperature Too High.
- Common causes
- Common causes include Faulty Intake Air Temperature (IAT) sensor, Intake Air Temperature (IAT) sensor harness is open or shorted, Intake Air Temperature (IAT) sensor electrical circuit poor 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.
Code P0127 Chrysler Description
IAT sensor values are used by the ECM processor to assist with the calculation of idle speed, fuel mixture and spark advance.
Inaccurate voltages from the IAT sensor may affect pulse-width, idle quality, and tail pipe emissions. Intermittent signals may cause hesitation, stumble and surging. If an IAT sensor failure accompanies an Engine Coolant Temperature (ECT) sensor failure, cooling fan operation may also be affected.
Some manufacturers incorporate the Intake Air Temperature (IAT) sensor as part of the Mass Air Flow (MAF) sensor (Air Flow Meter).
What are the Possible Causes of the DTC P0127 Chrysler?
- Faulty Intake Air Temperature (IAT) sensor
- Intake Air Temperature (IAT) sensor harness is open or shorted
- Intake Air Temperature (IAT) sensor electrical circuit poor connection
How to Fix the DTC P0127 Chrysler?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0127 Chrysler 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.
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Frequently Asked Questions about P0127 Chrysler Code
1. What does the OBDII code P0127 mean on a Chrysler vehicle?
The code P0127 indicates that the intake air temperature (IAT) sensor has detected an air temperature that is too high, which may affect engine performance.
2. What are the common symptoms of code P0127 on a Chrysler?
Symptoms may include reduced engine power, poor fuel economy, difficulty starting, or the check engine light turning on.
3. What causes the P0127 code to appear on a Chrysler?
Common causes include a faulty intake air temperature (IAT) sensor, wiring issues, a dirty or clogged air filter, or excessive heat near the sensor.
4. Can a dirty air filter trigger the P0127 code on a Chrysler?
Yes, a dirty or clogged air filter can restrict airflow and cause higher intake air temperatures, potentially triggering this code.
5. How do I fix the P0127 code on my Chrysler?
Check and replace the IAT sensor if faulty, inspect and clean the air filter, and ensure there are no wiring issues or heat sources affecting the sensor.
6. Is it safe to drive with the P0127 code on a Chrysler?
Driving with this code may lead to reduced fuel efficiency and engine performance, but it’s not typically an immediate safety risk. Prompt inspection and repair are recommended.
7. How do I check the intake air temperature sensor on a Chrysler?
Use a multimeter to test the sensor’s resistance and compare it to manufacturer specifications, or use an OBD-II scanner to monitor live data for abnormalities.
8. Can extreme weather conditions cause the P0127 code on a Chrysler?
Yes, extremely hot weather or high engine bay temperatures can contribute to higher intake air temperatures and trigger this code.
9. How much does it typically cost to fix a P0127 code on a Chrysler?
Repair costs vary, but replacing the IAT sensor or air filter may cost $50–$200, depending on parts and labor.
10. Will resetting the check engine light fix the P0127 code on a Chrysler?
Resetting the light may clear the code temporarily, but the underlying issue must be addressed to prevent the code from returning.
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