P0545

Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 1

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Unstable operation at idle

Causes

Exhaust gas temperature sensor malfunction
Open or short circuit in wiring harness
Poor connection or corroded contacts
Engine control unit (ECU) malfunction

How to Fix

Check the integrity of the wiring harness and sensor connections
Check the resistance of the EGT sensor (compare with factory values)
Replace EGT sensor if necessary
Check and clean the sensor connector contacts
Reset the error and check if it returns

Related codes

P0546 P0547 P0548