Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 2
The P2036 code indicates that the Engine Control Module (ECM) has detected a high voltage signal from the exhaust gas temperature (EGT) sensor located after the diesel particulate filter (DPF) on Bank 2. This sensor monitors exhaust temperature to protect the DPF and catalytic converter from overheating. A high voltage reading typically means the sensor circuit has an open, short to voltage, or the sensor itself has failed. This can lead to incorrect regeneration cycles, reduced fuel economy, and potential DPF damage.
1. Most Common Causes
- Faulty exhaust gas temperature sensor
- Open or shorted wiring in sensor circuit
- Corroded or loose connector at sensor
- ECM software or hardware issue
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced fuel economy
- DPF regeneration issues (frequent or incomplete)
- Possible limp mode or reduced engine power
3. Step-by-Step Diagnosis
Step 1: Scan for additional codes and freeze frame data.
Step 2: Visually inspect the EGT sensor connector and wiring for damage, corrosion, or loose connections.
Step 3: Measure sensor resistance and compare to specifications (typically 100-200 kΩ at cold).
Step 4: Check for voltage at sensor signal wire (should be 0.5-4.5V depending on temperature).
Step 5: If sensor and wiring are okay, test ECM output and consider reprogramming or replacement.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause DPF damage and reduced performance. Short trips may be okay, but have it diagnosed promptly.
How much does it cost to fix?▼
Replacing the EGT sensor typically costs $150-$300 including parts and labor. Wiring repairs may be less, while ECM issues could be more.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.