Skip the auto shop - Our mechanics make house calls

P2033 OBD-II Trouble Code: Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 2

check engine light logo

P2033 trouble code definition

Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 2

What the P2033 code means

P2033 is an OBD-II generic code for the exhaust gas temperature sensor circuit high bank 1 sensor 2 to the engine control module (ECM). This means the sensor signal voltage is shorted high on bank 1 sensor 2, indicating the temperature sensor is out of specified temperature range for a normal exhaust after the particulate filter on diesel engines

What causes the P2033 code?

  • The engine control module signal return from the bank 1 sensor 2 exhaust temperature sensor is out of range, in the high end.

  • The ECM turns on the Check Engine Light if the ECM detects a voltage return over approximately 3.3 volts for more than one second.

  • The wiring or connection to the sensor is shorted to power.

What are the symptoms of the P2033 code?

  • The Check Engine Light will be illuminated and the code is set in ECM memory as a fault.

  • The engine fault may be the P2033 and also particulate filter light may be illuminated.

  • If the particulate filter is clogged then you may have a low power condition.

How does a mechanic diagnose the P2033 code?

  • Scans and documents the code in the ECM

  • Diagnoses the code, as per the manufacturer's pinpoint test, to verify the sensor signal

  • Runs the particulate filter cleaning routine and retests the sensor

  • Disconnects the sensor and checks if the voltage short goes away on the scanner

Common mistakes when diagnosing the P2033 code

  • Clearing ECM memory codes before checking the freeze frame data of the failure

  • Failing to clear ECM codes after the P2033 codes are fixed

  • Replacing the sensor when a major exhaust restriction after the sensor is causing the excessive back pressure in the exhaust

How serious is the P2033 code?

Code P2033 is an indication that the particulate filter and sensor may need to be serviced and/or repaired. The particulate filter should be cleaned before the sensor is replaced.

What repairs can fix the P2033 code?

  • Replacing the sensor after the particulate filter is cleaned
  • Repairing the wiring or connection to the exhaust temperature sensor assembly
  • Replacing the ECM for a short circuit in the ECM temperature sensor circuit

Additional comments for consideration regarding the P2033 code

Code P2033 can be generated by a vehicle that has an exhaust that is partly blocked between the second temperature sensor and the exhaust outlet. A blocked particulate filter can also cause excessive exhaust temperatures.

Need help with a P2033 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....
How to Get a Louisiana Driver's Permit
s licensing program. The first step in this program is to obtain...


Related questions

Q: My truck turns over but won't start.

When a truck won't start, it's usually going to be an ignition or fuel system-related malfunction. The fact that your gas gauge was "ticking" a bit may be an indicator that an electrical problem exists, causing the ignition system to...

Q: Check Engine code reads "catalytic converter"

Hello. If you have a check engine code for a catalytic converter then most of the time that is exactly what you need. In some cases a bad oxygen sensor can make it look like there is a bad converter....

Q: Intake maifold runner control is stuck open

Hello, thanks for writing in about your 2001 Mazda Miata. Due to this trouble code, the intake manifold runner control will need to be replaced. If this is not done you can cause serious damage to your car. If you...