P0548
Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 1
P0548 is an OBD-II diagnostic trouble code meaning: Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 1. Common causes: exhaust gas temperature (egt) sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Deteriorating fuel economy
- Problems starting the engine in cold weather
Causes
- Exhaust gas temperature (EGT) sensor malfunction
- Open or short circuit in wiring harness
- Poor connection or corrosion in connectors
- Engine control unit (ECU) malfunction
How to Fix
- Check the integrity of the EGT sensor wiring harness and connectors
- Measure the resistance of the EGT sensor and compare with manufacturer's specifications
- Check the voltage and signal of the sensor using an oscilloscope or multimeter
- Replace the EGT sensor if a fault is detected
- Clean or replace connectors if corroded
Related codes
Error P0548 by Vehicle Brand
FAQ
What does the P0548 code mean?
P0548 is an OBD-II diagnostic trouble code that indicates: Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 1
What causes a P0548 error code?
The most common causes of P0548 include: Exhaust gas temperature (EGT) sensor malfunction; Open or short circuit in wiring harness; Poor connection or corrosion in connectors; Engine control unit (ECU) malfunction.
How do I fix a P0548 diagnostic trouble code?
To fix P0548: Check the integrity of the EGT sensor wiring harness and connectors. Measure the resistance of the EGT sensor and compare with manufacturer's specifications. Check the voltage and signal of the sensor using an oscilloscope or multimeter. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0548?
Limited driving only, diagnose soon
How much does it cost to fix P0548?
The estimated repair cost for P0548 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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