P2033
Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 2
Emissions (exhaust temperature)
Generic OBD-II
Medium
What it means
P2033 means the exhaust gas temperature (EGT) sensor 2 on bank 1 is reporting an abnormally high circuit voltage, usually indicating an open circuit or failed sensor. The engine still starts and runs, but on diesels this sensor helps manage and protect DPF regeneration, so a fault can interfere with soot burn-off. It's typically a wiring, connector, or sensor issue.
Medium
Can I keep driving? The engine runs and starts normally; on diesels it can disrupt DPF regeneration, so get it fixed before soot builds up.
Common symptoms
What you'll notice
- Check-engine light on
- Diesel: incomplete or missed diesel particulate filter (DPF) regeneration
- Possible reduced power if the vehicle enters a protective mode
- Often no change in how the engine drives
Common causes
Most likely first
- Faulty exhaust gas temperature (EGT) sensor 2 on bank 1Likely
- EGT sensor wiring open or shorted (reads as high voltage)Common
- Corroded or loose connector at the sensorCommon
- Damaged wiring near the hot exhaust routingLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and compare the EGT sensor's reported temperature to the others.
- Inspect the sensor connector and harness for open circuits, corrosion, or heat damage.
- Check the sensor's resistance against spec; a reading pinned high usually means an open circuit or failed sensor.
- Replace the EGT sensor if faulty, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2033?+
The engine drives normally, but on diesels the PCM relies on this sensor to run and protect DPF regeneration. Prolonged driving with it faulty can lead to soot buildup, so repair it soon.
Can I just clear P2033?+
It returns until the sensor or wiring is repaired. The high-voltage reading points to an open circuit that needs fixing.
Related codes
Often seen with P2033
Read & clear P2033 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX