P0545Medium SeverityEmissions

Exhaust Gas Temperature Sensor Circuit Malfunction (Bank 1)

What This Means

The exhaust gas temperature (EGT) sensor for bank 1 circuit has a malfunction. This sensor monitors exhaust temperature for turbo protection and DPF regeneration management.

Common Symptoms

Check engine light on
DPF regeneration issues
Turbo protection mode
Reduced power

Common Causes

Faulty EGT sensor
Wiring damage from heat
Connector melting
Exhaust leak
PCM circuit failure

Estimated Repair Cost

$100 – $500

Parts and labor (varies by vehicle and location)

Difficulty:Moderate

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For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.