P1135 Audi Code - HO2S Heater Circuit- Bank 1 & 2 Sensor 2 Electrical Malfunction
Quick Answer
The P1135 code for Audi vehicles indicates a problem with the HO2S (Heated Oxygen Sensor) heater circuit for Bank 1 & 2 Sensor 2. Common causes include Faulty oxygen sensor, Damaged wiring or connectors in the heater circuit, Corrosion or contamination in the sensor or its connections. 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
- P1135 Audi indicates HO2S Heater Circuit- Bank 1 & 2 Sensor 2 Electrical Malfunction.
- Common causes
- Common causes include Faulty oxygen sensor, Damaged wiring or connectors in the heater circuit, Corrosion or contamination in the sensor or its connections.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1135 Audi Description
The P1135 code for Audi vehicles indicates a problem with the HO2S (Heated Oxygen Sensor) heater circuit for Bank 1 & 2 Sensor 2. This sensor is responsible for monitoring the oxygen levels in the exhaust gases and providing feedback to the engine control module to adjust the air-fuel mixture for optimal combustion. The heater circuit is essential for the sensor to reach operating temperature quickly, especially during cold starts.
Common Causes of P1135 Audi
- Faulty oxygen sensor
- Damaged wiring or connectors in the heater circuit
- Corrosion or contamination in the sensor or its connections
- Issues with the engine control module affecting sensor communication
- Extreme temperatures or environmental factors affecting sensor performance
Symptoms of P1135 Audi
- Check Engine Light illuminated on the dashboard
- Decreased fuel efficiency
- Rough idling or stalling
- Hesitation or lack of power during acceleration
- Increased emissions during emissions testing
How to Fix P1135 Audi
- Use an OBD-II scanner to confirm the P1135 code and identify the specific sensor causing the issue.
- Inspect the wiring and connectors for damage, corrosion, or loose connections. Repair or replace as necessary.
- Test the oxygen sensor's heater circuit using a multimeter to check for continuity and proper voltage.
- Replace the oxygen sensor if it is found to be faulty or not responding correctly.
- Clear the trouble codes and perform a test drive to verify that the issue has been resolved.
Cost to Fix P1135 Audi
The typical repair costs for resolving a P1135 code on an Audi vehicle can range from $200 to $500, depending on the specific components that need to be replaced. This estimate includes the cost of a new oxygen sensor, any necessary wiring repairs, and labor charges. It's important to note that actual repair costs can vary based on factors such as the vehicle's make and model, the location of the repair shop, and the extent of the electrical issue. Customers should consult with a qualified mechanic for a more accurate estimate based on their individual circumstances.
Need more information about the P1135 Audi code?
Need more information on how to fix the P1135 Audi code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1135 Audi code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1135 Audi Code
What does the OBDII code P1135 mean for an Audi?
The P1135 code indicates a problem with the heater circuit of the oxygen sensor (HO2S) on Bank 1 or Bank 2, Sensor 2, due to an electrical malfunction.
What are the common symptoms of code P1135 in an Audi?
Symptoms may include poor fuel economy, rough idling, difficulty starting, increased emissions, and an illuminated check engine light.
What causes the P1135 code to appear on an Audi?
Common causes include a faulty oxygen sensor, damaged wiring or connectors, blown fuses, or issues with the vehicle’s powertrain control module (PCM).
Can a P1135 code affect vehicle performance?
Yes, it can lead to improper air-fuel ratio readings, causing reduced fuel efficiency and decreased engine performance.
How can I diagnose the P1135 code on my Audi?
Start by using an OBDII scanner to confirm the code, then inspect the oxygen sensor, heater circuit wiring, connectors, and fuses for damage or wear.
What is the role of the heater circuit in the oxygen sensor?
The heater circuit warms up the oxygen sensor quickly to ensure accurate air-fuel ratio readings during engine startup and operation.
Can I drive my Audi with a P1135 code?
While the vehicle may still be drivable, it is not recommended as the code can lead to increased emissions and further damage to the engine or exhaust system.
How do I fix the P1135 code on my Audi?
Repairs may involve replacing the faulty oxygen sensor, repairing damaged wiring or connectors, or checking and replacing blown fuses.
How much does it cost to repair a P1135 code on an Audi?
Repair costs vary but typically range from $150 to $400, depending on whether you replace the oxygen sensor or address wiring issues.
Do I need to reset the code after repairs?
Yes, use an OBDII scanner to clear the code after completing repairs and ensure the issue is resolved.
Discuss the causes and fixes for P1135 Audi OBDII Code
Code P1135 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.