OBD-II code · Electrical & Network
The engine computer has lost sight of crankshaft position — no-start or intermittent stall territory. The sensor is a common cause; so are damaged wiring, a cracked reluctor ring, and a failing module driver.
Replace the sensor ($200–$400). If the harness or reluctor ring is the real fault, the car still will not run — and you are told we need to re-diagnose from scratch.
Typical guess-and-swap cost: $200–$400 (sensor swap) when the fault is wiring or the ring
Scope the sensor signal while cranking, back-probe the circuit for dropouts, inspect the reluctor ring. Sensor vs. wiring vs. module is exactly the call an oscilloscope makes in 15 minutes.
Mobile service in Canyon Lake, San Antonio & Austin. Written report with root cause — see a sample.