What does the C1122 engine speed signal fault mean?

1 Answers
StSabrina
07/29/25 10:08pm
C1122 engine speed signal fault is likely due to an issue with the crankshaft sensor signal or a fault in the right front body acceleration sensor. Encountering this situation is a professional issue, a professional fault, and requires professional personnel to resolve; it is recommended to go to a 4S shop for computer diagnostics. Below is an introduction to the acceleration sensor: Acceleration sensor: includes a silicon diaphragm, upper cover, and lower cover, with the diaphragm positioned between the upper and lower covers, bonded together; one-dimensional or two-dimensional nanomaterials, gold electrodes, and leads are distributed on the diaphragm, and wires are drawn out using a bonding process. Function: The acceleration sensor is a testing instrument that converts the physical signal of acceleration into an easily measurable electrical signal. The differential capacitance force-balanced acceleration sensor converts the measured acceleration into changes in the capacitance of the capacitor.
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