P2083 indicates an intermittent fault in the exhaust gas temperature (EGT) sensor circuit for Bank 2, Sensor 1 (upstream of the catalytic converter). This code is set when the powertrain control module (PCM) detects an intermittent open, short, or out-of-range signal from the sensor.
The sensor itself is the most common failure point due to thermal stress, vibration, or contamination. Intermittent internal shorts or opens can cause the code.
Wires near the exhaust can become brittle, chafed, or melted. Corrosion at the connector can create intermittent contact.
An exhaust leak upstream of the sensor can cause erratic temperature readings, triggering an intermittent code.
Intermittent ground or reference voltage issues in the sensor circuit can cause the PCM to see an unstable signal.
A failing PCM is an uncommon cause, but a software glitch or internal fault could misinterpret a normal sensor signal as intermittent. This should only be considered after all other possibilities are ruled out.
You may be able to drive short distances, but the vehicle may enter limp mode or have reduced performance. Prolonged driving with a faulty EGT sensor can affect emissions and fuel economy. It's best to diagnose and repair promptly.
It is not recommended. The sensor is the most common cause, but wiring issues are also frequent. Replacing the sensor without inspecting the circuit may not fix the problem if the fault is in the harness or connector.
Almost never. The PCM is rarely the cause of this code. Many drivers are incorrectly told to replace the PCM, but that is usually a misdiagnosis. Focus on the sensor, wiring, and exhaust system first.
Bank 2 refers to the side of the engine opposite cylinder #1 (the rear bank on V-type engines). Sensor 1 is the first exhaust gas temperature sensor after the exhaust manifold, before the catalytic converter.