P0547: Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 1

The exhaust gas temperature sensor is a thermistor in a voltage divider with the module's pull-up resistor; the first one (sensor 1) sits before the turbocharger, the oxidation catalyst or after it depending on the maker. Diesels use it for particulate filter regeneration and component protection; CARB names it explicitly as a monitored input. Bank 2 sensor 1 exists only on V engines with a separate exhaust path per cylinder bank. No manufacturer document available to us uses this code; the thresholds known for bank 1 apply by analogy. P0547 is the general circuit fault, the counterpart of P0544.

Bank 2 is the side without cylinder 1, so it only exists on V or boxer engines.

Symptoms

• Check engine light on
• Particulate filter regeneration missing, filter warning
• Possible power reduction

Most likely causes

• Sensor faulty or aged
• Cable or connector damaged by heat or vibration
• Exhaust leak before the sensor
• Engine module

What to check, in order

Start with the simplest. You can tick off each step.

1. Read the soot load and differential pressure with a scanner
2. Check the differential pressure sensor's hoses
3. Check the temperatures before and after the filter
4. Fix any fuel injection or EGR codes before regenerating
5. Perform a regeneration while driving or at a repair shop when the diagnosis allows it

Good to know

• Repair difficulty: medium
• It can trigger limp mode.
• It affects emissions.

What each character of P0547 means

• P: Powertrain: engine and transmission
• 0: Generic code: same on every make
• 5: Speed and idle
• 47: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0547?

If the light is on steadily, take a highway drive or go to a repair shop soon. If the car is in limp mode or the light is flashing, do not push the engine.

What causes code P0547?

The most common causes are: sensor faulty or aged; cable or connector damaged by heat or vibration; exhaust leak before the sensor.

Related codes

• P0548Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 1
• P0549Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 1
• P0544Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 1
• P2034Exhaust Gas Temperature Sensor Circuit (Bank 2 Sensor 2)
• P2080Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 1 Sensor 1)

Sources

• hella.com: checking the exhaust gas temperature sensor
• gsi.ext.gm.com: 18OBDG04 Engine Diagnostics
• law.cornell.edu: 13 CCR 1968.2

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.