What Does P2033 Mean?
The EGT sensor circuit for Bank 1 Sensor 2 is reading abnormally high voltage, above the expected range. This suggests the sensor is indicating impossible temperatures or has an open circuit condition.
Common Causes
40%
EGT sensor open circuit or internal failure
25%
Open circuit in wiring harness between sensor and PCM
20%
Loose or disconnected sensor connector
12%
Corroded sensor terminals creating high resistance
3%
PCM internal circuit failure on sensor input
Diagnostic Steps
1
Step 1: Inspect sensor connector for proper seating and terminal engagement
2
Step 2: Measure sensor resistance with DVOM and compare to specification at ambient temperature
3
Step 3: Check for open circuits or high resistance in wiring from sensor to PCM
4
Step 4: Verify reference voltage at sensor connector from PCM (typically 5V)
5
Step 5: Monitor signal voltage while heating sensor with external heat source
Estimated Repair Cost
$150 - $400
Parts + labor, varies by vehicle and location
The EGT sensor circuit for Bank 1 Sensor 2 is reading abnormally high voltage, above the expected range. This suggests the sensor is indicating impossible temperatures or has an open circuit condition.
The most common cause of P2033 (Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 2) is: EGT sensor open circuit or internal failure
Typical repair costs for P2033 range from $150 to $400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive but DPF regeneration and emissions controls may be disabled. May result in reduced power or engine derate on diesel vehicles.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2033 to identify the root cause.
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Quick Info
Category
Powertrain
System
Emissions Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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