This code indicates that the engine computer is detecting a voltage signal from the bank 2 camshaft position sensor that is lower than expected. It typically points to a problem in the sensor itself or its wiring and connector, rather than an actual camshaft timing issue.
The sensor itself has internally failed or degraded, producing a weak or absent signal. This is the most common cause of a circuit-low code.
Corrosion, bent pins, chafed insulation, or a loose connection at the sensor or PCM can cause low voltage or an open circuit. This is especially common in harsh environments.
The signal wire between the sensor and PCM may be shorted to ground or another circuit, pulling the voltage below the expected threshold.
A damaged, loose, or misaligned tone wheel on the camshaft can produce a weak or erratic signal that the PCM interprets as circuit low. This is less common than electrical causes.
An internal failure in the engine computer's input circuit is very rare and should only be considered after all wiring, connector, and sensor issues are ruled out.
Short distances may be possible, but the engine may run poorly, stall, or fail to restart. It is best to diagnose and repair before driving further.
Usually no. The word 'circuit' in the code indicates an electrical fault in the sensor or wiring, not a camshaft timing misalignment. However, a damaged reluctor wheel can mimic a circuit fault.
No. Replacing the PCM is almost never the correct fix for this code. The sensor, wiring, or connector are the likely culprits. PCM failure is extremely rare and should only be considered after thorough testing of all external components.
Bank 2 is the side of the engine opposite cylinder 1. The sensor is typically mounted near the camshaft on that cylinder bank, often on the cylinder head. Consult a service manual for the exact location on your engine.