Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 1)
The P2033 code means the vehicle's onboard diagnostic system has detected: Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 1). This is a serious severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $150 - $400 (parts and labor)
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Common Symptoms
- Check Engine Light on
- False high temperature readings causing power reduction
- Engine may enter protection mode
- DPF regeneration may abort prematurely
- Reduced turbo boost
Probable Causes (Ranked by Likelihood)
- Short to voltage in EGT sensor circuit Very High
- Failed EGT sensor reading high High
- Open ground in sensor circuit Moderate
- Heat-damaged wiring Moderate
- PCM input driver failure Low
Step-by-Step Diagnostic Procedure
-
Confirm P2033 with freeze frame data and note temperature readings
-
Check EGT sensor wiring for heat damage or shorts to voltage
-
Measure sensor circuit voltage and ground at connector
-
Compare sensor reading to infrared thermometer measurement of exhaust pipe
Common Fixes by Vehicle
What techs usually find when diagnosing P2033 on specific vehicles — tap your vehicle for the fix and the exact part:
2008-2016 VW/Audi 2.0L TDI moderate DIY
P2033 = EGT bank 1 sensor 2 circuit HIGH input. Usually means an open circuit (broken wire or failed sensor reading open). Check harness between sensor and ECM for chafing. Replace sensor with OE Bosch. Heat-shrink or replace any damaged harness insulation to prevent recurrence.
Labor: 1-2 hours2011-2019 GM 2.0L Cruze/Equinox Diesel moderate DIY
GM 2.0L diesel P2033 = EGT sensor high. Replace with AC Delco OE -- not aftermarket. If code returns quickly, inspect harness near the turbocharger for heat damage. Route new harness with heat sleeve if original is degraded.
Labor: 1-2 hours2014-2019 Ram 1500 EcoDiesel 3.0L moderate DIY
EcoDiesel P2033 points to the EGT sensor 2 high-side fault. Sensor is between the turbo and DPF. Use OE Mopar replacement -- aftermarket EcoDiesel sensors frequently cause regen timing issues. After replacement, do a forced regen via Alfa OBD or shop tool.
Labor: 1-2 hoursFrequently Asked Questions
What does P2033 mean?
P2033 means the Bank 1 Sensor 1 exhaust gas temperature sensor is reading above the expected range, which can cause the PCM to falsely enter protection mode and limit engine power.
Can I drive with a P2033 code?
Drive only short distances. The false high reading may cause unnecessary power reduction and disrupt DPF regeneration on diesels.
How much does it cost to fix P2033?
Repair costs are typically $150 to $400 for sensor and/or wiring repair.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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