The code indicates that the voltage or resistance signal from the EGR cooler bypass position sensor on bank 2 is outside the expected range, signaling a performance problem with the sensor or its circuit.
The sensor inside the bypass valve can fail internally, giving erroneous position signals that trigger the code.
Broken wires, loose pins, or corrosion in the sensor circuit can cause intermittent or out‑of‑range signals.
Carbon buildup or mechanical binding can prevent the valve from reaching the commanded position, affecting sensor readings.
A PCM fault is uncommon; it usually only occurs when all other components test normal and the module’s input circuitry is defective.
In the vast majority of cases, no; the PCM is rarely the root cause and should be considered only after the sensor, wiring, and valve have been verified.
A severely clogged cooler can restrict flow, but it usually sets a different EGR‑related code; P2498 is specifically about the bypass sensor circuit.
The vehicle can usually be driven short distances, but prolonged operation may lead to reduced performance and higher emissions, so it should be addressed promptly.
Yes, clear the code with a scan tool or by disconnecting the battery briefly, then verify that it does not return after a drive cycle.