The P2035 code indicates that the engine control module has detected a voltage signal from the Bank 2 Sensor 2 Exhaust Gas Temperature (EGT) sensor that is lower than the expected operating range. This typically points to an electrical failure in the sensor or its associated wiring.
The sensor's internal element has failed or shorted, causing it to send a low voltage signal to the PCM.
Wiring harness insulation has melted or frayed, causing a short to ground.
Moisture or heat has caused corrosion in the sensor connector, interrupting the electrical signal.
The sensor or its connector is not fully seated, leading to an intermittent or low voltage reading.
The engine control module has an internal circuit fault preventing it from reading the sensor signal correctly.
No. 'Circuit Low' refers to the electrical voltage signal being below the expected threshold, which is usually caused by a component or wiring failure rather than the actual temperature of the gas.
The vehicle is generally drivable, but the engine may operate in a less efficient mode to protect the emissions system, and it will fail emissions testing.
No. It is extremely rare for P2035 to be caused by the PCM. The vast majority of these cases are resolved by replacing the failed sensor or repairing the wiring.