P1173
Front Heated O2 Sensor No Inversion
P1173 is an OBD-II diagnostic trouble code meaning: Front Heated O2 Sensor No Inversion. Common causes: front oxygen sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $28–89.
Symptoms
- Increased fuel consumption
- Unstable engine idling
- Check Engine Light Illuminates
- Reduced engine power
- Increased emissions of harmful substances
Causes
- Front oxygen sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Sensor heating element malfunction
- Problems with the engine ECU
How to Fix
- Check the condition and connection of the oxygen sensor
- Check the integrity of the sensor circuit
- Check the resistance of the sensor heating element
- Replace a faulty oxygen sensor
- If necessary, check/replace the engine ECU
Related codes
Error P1173 by Vehicle Brand
FAQ
What does the P1173 code mean?
P1173 is an OBD-II diagnostic trouble code that indicates: Front Heated O2 Sensor No Inversion
What causes a P1173 error code?
The most common causes of P1173 include: Front oxygen sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Sensor heating element malfunction.
How do I fix a P1173 diagnostic trouble code?
To fix P1173: Check the condition and connection of the oxygen sensor. Check the integrity of the sensor circuit. Check the resistance of the sensor heating element. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1173?
Yes, but get it checked soon
How much does it cost to fix P1173?
The estimated repair cost for P1173 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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