P2035 - EXHAUST GAS TEMPERATURE (EGT) SENSOR CIRCUIT LOW VOLTAGE BANK 2 SENSOR 2

The diagnostic code P2035 OBDII refers to the Exhaust Gas Temperature Sensor or EGT, which is placed in the front pipe of the Catalytic Converter (TWC). Its function is to protect the TWC from damage from the excessive heat that it is exposed to. This code indicates that the EGT Sensor circuit has a low voltage condition.

The Exhaust Gas Temperature Sensor is a resistance that changes to heat. It turns the exhaust temperature into an electrical signal that is sent to the Powertrain Control Module (PCM). The PCM gives you a 5-volt reference through a wire, and another wire provides the ground.

• The Check Engine light is illuminated.
• Decreased engine performance.

The causes of a DTC code P2035 OBD2 are:

• The electrical system may have bad wires.
• Corroded connectors or terminals.
• The EGT sensor may be defective.
• The Catalytic Converter may not be at operating temperature or it may take time to reach that temperature.

To set the correct diagnosis of the problem code P2035 OBDII, you must do the following:

• Inspect the Exhaust Gas Temperature Sensor connectors for abnormalities or defects. Make respective adjustments.
• Check there is no burn or wear points on the cables to indicate a short in the system. If you find such damage, you should repair or replace it.
• Use an ohmmeter to check the resistance of the EGT Sensor. You should get a reading of at least 150 ohms. If there is an extremely low resistance of 50 ohms, replace the sensor.