P2035 - 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. 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 (shorted internally) or the signal wire is shorted to ground. This can lead to incorrect temperature readings, potentially causing improper DPF regeneration or engine performance issues.
01. Most Common Causes
- Faulty exhaust gas temperature sensor (Bank 2 Sensor 2)
- Short circuit to ground in the sensor signal wire
- Corroded or damaged connector at the sensor
- ECM internal fault (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine performance or limp mode
- Possible DPF regeneration issues (frequent or incomplete regen)
- Increased fuel consumption
03. Step-by-Step Diagnosis
Step 1: Connect a scan tool and verify the code P2035. Check for additional codes related to EGT sensors.
Step 2: Visually inspect the EGT sensor connector and wiring for damage, corrosion, or shorting to ground.
Step 3: Disconnect the sensor and measure its resistance with a multimeter. Compare to manufacturer specs (typically 100-200k ohms at room temperature). A very low resistance indicates a shorted sensor.
Step 4: Check voltage at the sensor connector with the ignition on. Expect a reference voltage (usually 5V) from the ECM. If voltage is low or zero, check for a short to ground in the wiring.
Step 5: If sensor and wiring are okay, suspect an ECM issue. Perform a wiggle test and clear codes to see if they return.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances. The ECM may limit engine power or disable DPF regeneration, leading to potential DPF clogging or damage. Have it diagnosed promptly.
How much does it cost to fix?▼
Replacing the EGT sensor typically costs $150-$300 including parts and labor. Diagnostic fees may add $50-$100.