Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 2
The P2035 code indicates that the Engine Control Module (ECM) has detected a low voltage signal from the exhaust gas temperature (EGT) sensor located after the diesel particulate filter (DPF) on Bank 2 (the side of the engine without cylinder #1). This sensor monitors exhaust temperature to protect the DPF and other components. A low circuit condition typically means the sensor's resistance is too low, often due to a short circuit, faulty sensor, or wiring issues.
1. Most Common Causes
- Faulty exhaust gas temperature sensor
- Short circuit in sensor wiring or connector
- Corrosion or damage to sensor connector
- ECM software or hardware issue (rare)
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced fuel economy
- Possible limp mode or reduced engine power
- DPF regeneration issues
3. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for related codes.
Step 2: Visually inspect the EGT sensor Bank 2 Sensor 2 wiring and connector for damage, corrosion, or loose connections.
Step 3: Measure sensor resistance with a multimeter; compare to manufacturer specifications (typically 100-200 ohms at room temperature).
Step 4: Check for short to ground or power in the sensor circuit.
Step 5: If wiring and sensor are okay, test the ECM output signal or consult a professional for further diagnosis.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can lead to DPF damage, reduced performance, or catalytic converter damage. Have it diagnosed promptly.
How much does it cost to fix?▼
The cost typically ranges from $150 to $300 for parts and labor, depending on the vehicle and shop rates.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.