HO2S Heater Resistance Bank 1 Sensor 1
2018-2018 Audi A6 3.0L Supercharged V6
The 2018 Audi A6 is equipped with a 3.0L V6 engine. Below you'll find detailed p1102 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The ECU detected that the heater resistance in the upstream oxygen sensor on Bank 1 is outside the specified range. The heater brings the O2 sensor up to operating temperature quickly for accurate fuel trim control.
Symptoms
- Check Engine Light
- Poor cold-start fuel economy
- Extended warmup emissions
- Failed emissions test
Common Causes
- Faulty O2 sensor heater element
- High-resistance connection in heater circuit
- Corroded O2 sensor connector
- Blown heater circuit fuse
Diagnostic Steps
- Test O2 sensor heater resistance (should be 2-30 ohms)
- Check heater circuit fuse
- Inspect wiring and connector for corrosion
- Measure voltage at heater circuit
Repair Notes
Replace the upstream O2 sensor on Bank 1 if heater resistance is out of specification.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1102 on Other Vehicles
Common Questions
What does code P1102 mean on a 2018-2018 Audi A6?
P1102 stands for "HO2S Heater Resistance Bank 1 Sensor 1". The ECU detected that the heater resistance in the upstream oxygen sensor on Bank 1 is outside the specified range. The heater brings the O2 sensor up to operating temperature quickly for accurate fuel trim control.
What are the symptoms of P1102 on a Audi A6?
Common symptoms of P1102 include: Check Engine Light, Poor cold-start fuel economy, Extended warmup emissions, Failed emissions test.
What causes P1102 on a 2018-2018 Audi A6?
Common causes of P1102 include: Faulty O2 sensor heater element, High-resistance connection in heater circuit, Corroded O2 sensor connector, Blown heater circuit fuse.
Last updated: March 2026