Possible causes

– Faulty Engine control Module (ECM)
– Engine control Module(ECM) harness is open or shorted
– Engine control Module (ECM) cicuit poor electricl connection
– Low battery voltage

When is the code detected?

ECM receives incorrect voltage from A/T control unit continuously

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P0600 MAZDA Description

These circuit lines are used to control the smooth shifting up and down of A/T during the and acceleration/deceleration. Voltage signal are exchanged between the Engine Control Module (ECM) and Automatic Transmission (A/T) control unit.