P1134 Audi Code - HO2S Heater Circuit- Bank 1 & 2 Sensor 2 Short To B+
Quick Answer
A Heated Exhaust Oxygen (HO2S) sensor indicating rich at the end of a test is trying to correct for an over-lean condition. Common causes include Faulty O2 Sensor, O2 Sensor harness is open or shorted, O2 Sensor circuit poor electrical 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
- P1134 Audi indicates HO2S Heater Circuit- Bank 1 & 2 Sensor 2 Short To B+.
- Common causes
- Common causes include Faulty O2 Sensor, O2 Sensor harness is open or shorted, O2 Sensor circuit poor electrical 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 P1134 Audi Description
What are the Possible Causes of the DTC P1134 Audi?
- Faulty O2 Sensor
- O2 Sensor harness is open or shorted
- O2 Sensor circuit poor electrical connection
How to Fix the DTC P1134 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 P1134 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.
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Frequently Asked Questions about P1134 Audi Code
What does the OBDII code P1134 mean for an Audi?
P1134 indicates an issue with the heater circuit in the downstream oxygen sensors (Bank 1 Sensor 2 and Bank 2 Sensor 2), specifically a short to the battery positive voltage (B+).
What are the common symptoms of code P1134 in an Audi?
Common symptoms include an illuminated check engine light, reduced fuel efficiency, failed emissions tests, and potential rough idling or engine hesitation.
What causes the P1134 code to appear in an Audi?
The code may be triggered by damaged oxygen sensor wiring, a short circuit, a faulty oxygen sensor, or an issue with the engine control module (ECM).
How do I diagnose the P1134 code on my Audi?
Start by visually inspecting the wiring and connectors for damage, test the oxygen sensor heater resistance, and check for shorts or open circuits in the heater circuit.
Can a faulty oxygen sensor cause the P1134 code?
Yes, a faulty downstream oxygen sensor (Bank 1 or Bank 2 Sensor 2) can cause this code if the heater circuit fails.
Is P1134 a serious issue that requires immediate attention?
While the car may still run, the code indicates a potential impact on emissions and efficiency, so it’s recommended to address it promptly to avoid further problems.
How do I fix the P1134 code on an Audi?
Repairs may include replacing the faulty oxygen sensor, repairing damaged wiring, or addressing ECM-related issues if necessary.
Can I drive my Audi with the P1134 code?
While the vehicle may still operate, driving for an extended period with this code can lead to increased emissions and reduced fuel economy, so it’s best to fix it soon.
How much does it cost to repair the P1134 code on an Audi?
Repair costs vary, but replacing an oxygen sensor typically ranges from $150 to $300, depending on labor rates and parts.
Can a blown fuse trigger the P1134 code?
Yes, a blown fuse in the oxygen sensor heater circuit can cause this code due to the lack of power supply to the sensor’s heater.
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