P0038 Audi Code - HO2S Heater Control Circuit High Bank 1 Sensor 2
Quick Answer
Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 harness is open or shorted. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0038 Audi indicates HO2S Heater Control Circuit High Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 harness is open or shorted.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P0038 Audi Description
In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.
What are the Possible Causes of the DTC P0038 Audi?
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 harness is open or shorted
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0038 Audi?
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 P0038 Audi 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 P0038 Audi code?
Need more information on how to fix the P0038 Audi code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0038 Audi code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0038 Audi Code
1. What does the OBDII code P0038 for an Audi indicate?
The code P0038 for an Audi indicates an issue with the HO2S (Heated Oxygen Sensor) Heater Control Circuit High for Bank 1 Sensor 2.
2. What are the common symptoms of a P0038 error code in an Audi?
Common symptoms of a P0038 error code in an Audi may include poor fuel efficiency, rough idling, engine misfires, and the illumination of the Check Engine Light.
3. What are the possible causes of a P0038 error code in an Audi?
Possible causes of a P0038 error code in an Audi include a faulty HO2S sensor, damaged wiring or connectors in the sensor circuit, a blown fuse, or a problem with the engine control module.
4. How can I diagnose a P0038 error code in my Audi?
To diagnose a P0038 error code in your Audi, you can use an OBDII scanner to retrieve the code and inspect the HO2S sensor, wiring, and connectors for any visible damage or issues. Checking the fuse related to the sensor heater circuit is also recommended.
5. How can I repair a P0038 error code in my Audi?
Repairing a P0038 error code in your Audi may involve replacing the faulty HO2S sensor, repairing or replacing damaged wiring or connectors, checking and replacing any blown fuses, or addressing any issues with the engine control module.
6. Can a P0038 error code in an Audi cause other problems if left unaddressed?
If left unaddressed, a P0038 error code in an Audi can potentially lead to decreased fuel efficiency, engine performance issues, and further damage to the vehicle's emission control system.
7. Is it safe to continue driving with a P0038 error code in my Audi?
It is generally not recommended to continue driving with a P0038 error code in your Audi, as it can negatively impact the vehicle's performance and fuel efficiency. It is best to address the issue promptly to prevent further problems.
8. Can I reset the Check Engine Light after fixing a P0038 error code in my Audi?
After fixing a P0038 error code in your Audi, you can reset the Check Engine Light using an OBDII scanner or by disconnecting the car's battery for a few minutes. The light should reset once the issue is resolved.
9. Are there any preventive measures to avoid a P0038 error code in my Audi?
To help prevent a P0038 error code in your Audi, it is advisable to perform regular maintenance checks, including inspecting the oxygen sensors and related components, and addressing any issues promptly to avoid potential problems.
10. How long does it take to repair a P0038 error code in an Audi?
The time it takes to repair a P0038 error code in an Audi can vary depending on the exact cause of the issue and the extent of repairs needed. It is recommended to consult a professional mechanic for an accurate assessment and repair timeline.
Discuss the causes and fixes for P0038 Audi OBDII Code
Code P0038 Audi 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.
