P0547 — Exhaust gas temperature sensor, bank 2 sensor 1 — circuit fault

The exhaust-temperature monitor reports a fault for bank 2, sensor 1. A generic circuit label does not establish a particular open or short: some manufacturer implementations also evaluate signal plausibility. Identify the numbered sensor in the vehicle’s exhaust layout before interpreting the code.

Affected system: Exhaust gas temperature sensing

Symptoms

• Warning light may illuminate
• Related system function may be impaired
• Vehicle-specific symptoms vary

Possible causes

• Exhaust or emissions plumbing leak, restriction, valve fault, sensor fault, or damaged wiring
• Related wiring, connector, power or ground fault
• Vehicle-specific mechanical or control issue

What to check

• Record stored and pending codes and freeze-frame data
• Inspect the relevant exhaust or emissions plumbing and electrical connections, then compare commanded operation with sensor feedback during the enable conditions.
• Confirm measured values against the vehicle service information
• Retest under the conditions that set the code
• Inspect the relevant exhaust or emissions plumbing and electrical connections, then compare commanded operation with sensor feedback during the enable conditions.
• Repair the verified cause and confirm the code does not return

Also written as: P0547-00, P054700, PO547 (some scan tools add the fault-type byte, e.g. -00).