Question

It says ION sensing module cylinder id fault. What does that mean, please?

Answer 1

P1340 Ion sensing module cylinder ID fault.

The ion sensing module is another name for ignition control module its function is to energize and de-energize the primary ignition coil in response to signal from the control module. This code can be set from shorted out sparkplugs, injectors,poor ignition coil wiring,and even the PCM