P1238 Mitsubishi Code - MASS Airflow Sensor Plausibility
Quick Answer
The Powertrain Control Module (PCM) monitors the Mass Air Flow (MAS) Sensor. Common causes include Faulty Throttle Body, Faulty Mass Air Flow (MAS) Sensor, Mass Air Flow (MAS) Sensor harness is open or shorted. 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
- P1238 Mitsubishi indicates MASS Airflow Sensor Plausibility.
- Common causes
- Common causes include Faulty Throttle Body, Faulty Mass Air Flow (MAS) Sensor, Mass Air Flow (MAS) Sensor harness is open or shorted.
- 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 P1238 Mitsubishi Description
What are the Possible Causes of the DTC P1238 Mitsubishi?
- Faulty Throttle Body
- Faulty Mass Air Flow (MAS) Sensor
- Mass Air Flow (MAS) Sensor harness is open or shorted
- Mass Air Flow (MAS) Sensor circuit poor electrical connection
How to Fix the DTC P1238 Mitsubishi?
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 P1238 Mitsubishi 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 P1238 Mitsubishi code?
Need more information on how to fix the P1238 Mitsubishi code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1238 Mitsubishi code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1238 Mitsubishi Code
1. What are the common symptoms of OBDII code P1238 in a Mitsubishi related to the MASS Airflow Sensor Plausibility issue?
The common symptoms include rough idling, engine hesitation, decreased fuel efficiency, and potential stalling of the vehicle.
2. What are the possible causes of the P1238 code in a Mitsubishi, specifically related to the MASS Airflow Sensor Plausibility?
The code P1238 typically indicates a problem with the Mass Airflow Sensor (MAF) itself, issues with the sensor wiring, or a faulty MAF sensor connector.
3. How can I diagnose the OBDII code P1238 in my Mitsubishi related to the MASS Airflow Sensor Plausibility problem?
Diagnosis involves inspecting the MAF sensor for any physical damage, checking the wiring harness for loose connections or breaks, and using a scan tool to monitor MAF sensor data for inconsistencies.
4. What are some DIY repair tips for fixing the P1238 code in a Mitsubishi due to MASS Airflow Sensor Plausibility?
You can try cleaning the MAF sensor using specialized MAF cleaner, inspecting the wiring harness for any issues, and ensuring the MAF sensor connector is securely plugged in.
5. Can driving with the P1238 code in a Mitsubishi related to the MASS Airflow Sensor Plausibility problem cause further damage?
Continuing to drive with this issue can potentially lead to decreased engine performance, increased emissions, and further damage to engine components over time.
6. How crucial is it to address the P1238 code in a Mitsubishi related to the MASS Airflow Sensor Plausibility issue promptly?
It is important to address this issue promptly to prevent potential drivability issues, further damage to the vehicle, and to ensure optimal engine performance and fuel efficiency.
7. Are there any recalls or technical service bulletins related to the OBDII code P1238 in Mitsubishi vehicles with MASS Airflow Sensor Plausibility problems?
It is recommended to check with Mitsubishi dealerships or online resources for any related recalls or technical service bulletins that may provide additional guidance or support for this specific issue.
8. Can a faulty air filter or intake system contribute to triggering the P1238 code in a Mitsubishi related to the MASS Airflow Sensor Plausibility issue?
Yes, a clogged air filter or intake system can disrupt the airflow readings detected by the MAF sensor, potentially leading to the triggering of the P1238 code.
9. Is it possible for extreme weather conditions to trigger the P1238 code in a Mitsubishi related to the MASS Airflow Sensor Plausibility issue?
Extreme weather conditions such as extreme heat or cold can affect the performance of the MAF sensor and potentially lead to the triggering of the P1238 code.
10. How can I prevent the recurrence of the P1238 code in my Mitsubishi related to the MASS Airflow Sensor Plausibility issue after repair?
Regularly inspecting and cleaning the MAF sensor, ensuring proper air filter maintenance, and addressing any issues with the intake system can help prevent the recurrence of the P1238 code.
Discuss the causes and fixes for P1238 Mitsubishi OBDII Code
Code P1238 Mitsubishi comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
