P1199 Audi Code - O2S Heater Circuit Bank 2 Sensor 2 Electrical Malfunction
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 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
- P1199 Audi indicates O2S Heater Circuit Bank 2 Sensor 2 Electrical Malfunction.
- 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 P1199 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 P1199 Audi?
- Faulty O2 Sensor
- O2 Sensor harness is open or shorted
- O2 Sensor circuit poor electrical connection
How to Fix the DTC P1199 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 P1199 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 P1199 Audi Code
1. What does the OBDII code P1199 mean on an Audi?
P1199 indicates an electrical malfunction in the oxygen sensor (O2S) heater circuit for Bank 2, Sensor 2. This sensor monitors the catalytic converter's efficiency on Bank 2.
2. What are the symptoms of code P1199 in an Audi?
Common symptoms include an illuminated Check Engine Light, poor fuel economy, increased emissions, rough idling, or difficulty passing an emissions test.
3. What causes the P1199 code to trigger in an Audi?
Possible causes include a faulty O2 sensor, damaged wiring or connectors in the heater circuit, a blown fuse, or a malfunctioning engine control module (ECM).
4. Can I drive my Audi with the P1199 code?
While driving with this code is possible, it may lead to reduced performance and fuel efficiency. Prolonged driving without repair can damage the catalytic converter.
5. How do I diagnose the P1199 code on an Audi?
Start by inspecting the wiring and connectors for damage, testing the oxygen sensor heater circuit with a multimeter, and checking for blown fuses. Use an OBDII scanner to confirm the fault.
6. How do I fix the P1199 code in an Audi?
Repairs may involve replacing the faulty oxygen sensor, repairing damaged wiring, replacing a blown fuse, or, in rare cases, replacing the ECM if it's defective.
7. How much does it cost to fix the P1199 code on an Audi?
The cost varies based on the repair. Replacing an oxygen sensor typically costs $150–$400, while wiring repairs or ECM replacement can be more expensive.
8. Does the P1199 code affect emissions?
Yes, a malfunctioning O2 sensor heater circuit can cause increased emissions, leading to potential failure of emissions tests.
9. Is the O2 sensor Bank 2 Sensor 2 hard to replace on an Audi?
The difficulty depends on the vehicle model. Sensor 2 is typically located after the catalytic converter, and accessing it may require specialized tools or lifting the vehicle.
10. How can I prevent the P1199 code from recurring in my Audi?
Regular maintenance, including inspecting wiring and connectors, replacing worn sensors, and addressing Check Engine Light issues promptly, can help prevent this code.
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