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EmissionsSeverity Medium: diagnose soon

P2033Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 2)

What it means

The exhaust gas temperature sensor 2 signal voltage is too high. For this type of sensor that means the ECU sees an impossibly low temperature (about −40 °C), usually because the circuit is open. This sensor is usually before the particulate filter and controls regeneration.

Symptoms

  • Check engine light
  • DPF regeneration may not run
  • Possibly limp mode

Common causes

  • Open signal or ground wire
  • Unplugged or corroded connector
  • Open circuit inside the sensor

What to check first

  1. Live data shows about −40 °C
  2. Bridge the connector terminals with a jumper: the reading should jump to a very high value
  3. Measure the sensor resistance (OL means it is open)
Can I drive with P2033? Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.

Generic OBD-II meaning. Manufacturer-specific meanings and checks can differ; always check the service information for the car.

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P2033: questions and answers

What does P2033 mean?

P2033: Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 2). The exhaust gas temperature sensor 2 signal voltage is too high. For this type of sensor that means the ECU sees an impossibly low temperature (about −40 °C), usually because the circuit is open. This sensor is usually before the particulate filter and controls regeneration.

What are the symptoms of P2033?

Check engine light. DPF regeneration may not run. Possibly limp mode.

What causes P2033?

Open signal or ground wire. Unplugged or corroded connector. Open circuit inside the sensor.

How do you diagnose P2033?

1. Live data shows about −40 °C 2. Bridge the connector terminals with a jumper: the reading should jump to a very high value 3. Measure the sensor resistance (OL means it is open)

Can I drive with P2033?

Usually yes for a short distance, but performance or economy may suffer and the fault can get worse. Diagnose it soon.