P1135 Volkswagen Code - HO2S Heater Circuit- Bank 1 & 2 Sensor 2 Electrical Malfunction
Quick Answer
The P1135 code for Volkswagen vehicles indicates a problem with the HO2S (Heated Oxygen Sensor) Heater Circuit for Bank 1 & 2 Sensor 2. Common causes include Faulty oxygen sensor, Wiring or connector issues in the HO2S Heater Circuit, Blown fuse related to the oxygen sensor heater. 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 Volkswagen indicates HO2S Heater Circuit- Bank 1 & 2 Sensor 2 Electrical Malfunction.
- Common causes
- Common causes include Faulty oxygen sensor, Wiring or connector issues in the HO2S Heater Circuit, Blown fuse related to the oxygen sensor heater.
- 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.
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Code P1135 Volkswagen Description
The P1135 code for Volkswagen vehicles indicates a problem with the HO2S (Heated Oxygen Sensor) Heater Circuit for Bank 1 & 2 Sensor 2. This means that there is an electrical malfunction in the circuit that controls the heating element of the oxygen sensor located downstream of the catalytic converter on both sides of the engine. The oxygen sensors play a crucial role in monitoring the oxygen content in the exhaust gases, providing feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion.
Common Causes of P1135 Volkswagen
- Faulty oxygen sensor
- Wiring or connector issues in the HO2S Heater Circuit
- Blown fuse related to the oxygen sensor heater
- ECM software or hardware malfunction
- Exhaust leaks near the oxygen sensor
Symptoms of P1135 Volkswagen
- Decreased fuel efficiency
- Rough idling or stalling
- Hesitation or lack of power during acceleration
- Check Engine Light illuminated
- Increased emissions
How to Fix P1135 Volkswagen
- Diagnose the issue using a scan tool to confirm the P1135 code and pinpoint the faulty sensor.
- Inspect the wiring and connectors for any damage or corrosion, repairing or replacing as needed.
- Check the fuse related to the oxygen sensor heater and replace if blown.
- Test the oxygen sensor heater with a multimeter to determine if it is functioning correctly. Replace the sensor if necessary.
- Clear the code and perform a test drive to ensure the issue has been resolved.
Cost to Fix P1135 Volkswagen
The typical repair costs for addressing a P1135 code on a Volkswagen vehicle can range from $200 to $500, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary significantly. It's recommended to inquire about local rates to get a more accurate estimate based on your location, vehicle make and model, and engine type. Keep in mind that rates at dealerships or in metropolitan areas may be higher, while independent shops could offer more competitive pricing.
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