Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 2
Diagnostic trouble code P2035 indicates that the powertrain control module (PCM) has detected a low voltage signal from the exhaust gas temperature (EGT) sensor located in Bank 2, Sensor 2. This low voltage condition typically signifies that the sensor is reporting an abnormally low temperature or that there is a short to ground in the sensor circuit.
While not an immediate safety hazard, driving with this code for an extended period can lead to inefficient DPF regeneration or potential damage to exhaust components. It should be diagnosed and repaired soon to maintain proper emissions system function.
Common symptoms
- Illuminated Check Engine Light
- Decreased fuel efficiency
- Failed emissions test
- Incomplete diesel particulate filter (DPF) regeneration (on diesel engines)
- Possible reduction in engine power or limp mode
Likely causes
- Faulty Exhaust Gas Temperature (EGT) sensor (Bank 2, Sensor 2)
- Short to ground in the EGT sensor wiring harness
- Corroded, damaged, or loose electrical connector at the EGT sensor
- Severe exhaust leak upstream of the sensor causing abnormally low readings
- Faulty Powertrain Control Module (PCM) (rare)
What to check before replacing parts
Visually inspect the EGT sensor wiring and connector for Bank 2, Sensor 2.
Look for: Look for melted, chafed, or broken wires, and check the connector for corrosion, pushed-out pins, or moisture.
Use an OBD-II scanner to monitor the live data for the Bank 2, Sensor 2 EGT.
Look for: Check if the temperature reading is stuck at an extremely low value (often below ambient) or if it fluctuates erratically, indicating a sensor or circuit fault.
Disconnect the EGT sensor and measure its internal resistance using a digital multimeter.
Look for: Compare the resistance reading to the manufacturer's specifications for the current ambient temperature; an open circuit or out-of-spec resistance indicates a failed sensor.
Check the sensor circuit for a short to ground.
Look for: With the sensor and PCM disconnected, measure continuity between the sensor signal wire and chassis ground; any continuity indicates a short to ground in the wiring harness.
Inspect the exhaust system upstream of the EGT sensor for leaks.
Look for: Look for soot marks, cracks, or loose flanges that could allow ambient air to enter and artificially lower the exhaust temperature reading.
This page explains the generic P2035 definition and is general reference information, not a diagnosis for your specific vehicle. Actual causes, severity, and repairs vary by make, model, engine, and mileage — always confirm with a scan tool and a qualified technician before replacing parts.
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