B0338 GMC Code - Inside Air Temperature Sensor Open
Quick Answer
The ambient air temperature sensor allows the Heating, Ventilation, and Air Conditioning (HVAC) Control Module to monitor the temperature of the air surrounding the front of the vehicle. Common causes include Faulty Inside Temperature Sensor, Inside Temperature Sensor harness is open or shorted, Inside Temperature Sensor circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- B0338 GMC indicates Inside Air Temperature Sensor Open.
- Common causes
- Common causes include Faulty Inside Temperature Sensor, Inside Temperature Sensor harness is open or shorted, Inside Temperature Sensor circuit poor electrical connection.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code B0338 GMC Description
What are the Possible Causes of the DTC B0338 GMC?
- Faulty Inside Temperature Sensor
- Inside Temperature Sensor harness is open or shorted
- Inside Temperature Sensor circuit poor electrical connection
- Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module
How to Fix the DTC B0338 GMC?
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 B0338 GMC 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 B0338 GMC code?
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Frequently Asked Questions about B0338 GMC Code
1. What are the common symptoms of OBDII code B0338 GMC (Inside Air Temperature Sensor Open)?
The common symptoms of this code may include inaccurate temperature readings on the climate control system, issues with the air conditioning system, and potential problems with the automatic climate control.
2. What are the potential causes of OBDII code B0338 GMC?
The most common causes of this code are a faulty inside air temperature sensor, damaged wiring or connectors related to the sensor, or a problem with the climate control module.
3. How can I diagnose OBDII code B0338 GMC?
Diagnosing this code typically involves using a scan tool to retrieve the code, checking the inside air temperature sensor for proper operation, inspecting the wiring and connectors for damage, and testing the climate control module if necessary.
4. Can I repair OBDII code B0338 GMC myself?
Depending on your automotive repair skills, you may be able to repair this code yourself by replacing the inside air temperature sensor, repairing any damaged wiring or connectors, or addressing issues with the climate control module. However, professional help may be needed for complex repairs.
5. Are there any simple repair tips for OBDII code B0338 GMC?
One simple repair tip is to first check the wiring and connectors associated with the inside air temperature sensor for any visible damage or corrosion before replacing the sensor itself. This may solve the issue in some cases.
6. Will OBDII code B0338 GMC cause my vehicle to fail an emissions test?
Since this code is related to the inside air temperature sensor and does not directly affect emissions, it is unlikely to cause your vehicle to fail an emissions test. However, it is still important to address the underlying issue for proper vehicle operation.
7. How urgent is it to fix OBDII code B0338 GMC?
While this code may not directly impact the drivability of your vehicle, it is important to address it in a timely manner to ensure proper functioning of the climate control system and to prevent any potential issues with temperature regulation inside the vehicle.
8. Can OBDII code B0338 GMC cause other problems in my vehicle?
If left unresolved, this code may lead to inaccurate temperature readings, potential issues with the air conditioning system, and overall discomfort for passengers due to improper climate control regulation.
9. How long does it typically take to repair OBDII code B0338 GMC?
The repair time for this code can vary depending on the exact cause of the issue and the complexity of the repair needed. Simple fixes like sensor replacement may take less time, while more involved repairs could require additional diagnostics and labor.
10. Is it necessary to reset the OBDII code B0338 GMC after making repairs?
After addressing the underlying issue causing this code, it is recommended to reset the code using a scan tool to clear it from the vehicle's memory. This will help ensure that the repair was successful and that the code does not reappear.
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