P0121
JCB P0121: Range / Performance of “A” Sensor / Throttle / Pedal Position Switch
Issue description
The system has detected an issue with the range or performance of the “A” Sensor, Throttle, or Pedal Position Switch. This may indicate a malfunction in the component or an inconsistency in its signal output.
Check the cause
The component identified by this code
The affected circuit
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