P1173 Code - Front Heated O2 Sensor No Inversion
Quick Answer
The P1173 code indicates that there is a problem with the front heated oxygen sensor not switching or inverting as expected. Common causes include Faulty front heated oxygen sensor, Wiring issues or connections, Exhaust leaks near the sensor. 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
- P1173 indicates Front Heated O2 Sensor No Inversion.
- Common causes
- Common causes include Faulty front heated oxygen sensor, Wiring issues or connections, Exhaust leaks near the sensor.
- 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 P1173 Description
The P1173 code indicates that there is a problem with the front heated oxygen sensor not switching or inverting as expected. The front heated O2 sensor is responsible for measuring the oxygen content in the exhaust gases and providing feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. When this sensor fails to switch or invert properly, it can lead to inaccurate readings and affect the vehicle's performance.
Common Causes of P1173
- Faulty front heated oxygen sensor
- Wiring issues or connections
- Exhaust leaks near the sensor
- ECM software or hardware issues
- Fuel system problems
Symptoms of P1173
- Decreased fuel efficiency
- Rough idling or stalling
- Engine misfires
- Check Engine Light illuminated
- Poor acceleration
How to Fix P1173
- Use a diagnostic scanner to confirm the P1173 code and pinpoint the issue.
- Inspect the front heated oxygen sensor and its wiring for any visible damage or corrosion.
- Test the sensor's functionality using a multimeter to check for proper voltage signals.
- Replace the front heated oxygen sensor if it is found to be faulty.
- Clear the code from the ECM's memory and perform a test drive to ensure the issue has been resolved.
Cost to Fix P1173
The cost of repairing a front heated O2 sensor no inversion issue can vary depending on the make and model of the vehicle, as well as the labor rates in your area. Generally, replacing an oxygen sensor can cost between $200 to $400, including parts and labor. However, it's recommended to get a specific quote from a trusted auto repair shop to determine the exact cost for your vehicle.
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Code P1173 Information for Specific Makes
- P1173 Audi — Throttle Actuation Potentiometer Signal 2 Signal Too High
- P1173 BMW — Ambient Pressure Sensor Rationality Check
- P1173 Ford — Rotor Calibration Fault
- P1173 Hyundai — Electronic Throttle System Rationality Malfunction
- P1173 Land Rover — RH Bank Front HO2S Signal Fuel Trim Malfunction
- P1173 Mazda — HO2S-21 No Change Detected
- P1173 MINI — Ambient Pressure Sensor Rationality Check
- P1173 Volkswagen — Throttle Actuation Potentiometer Signal 2 Signal Too High
Frequently Asked Questions about P1173 Code
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