Possible Causes
NOTE: The listed causes may not be a complete list of all potential issues and there may be other causes.
- Faulty Powertrain Control Module (PCM)
- Powertrain Control Module harness is open or shorted
- Poor electrical connection in Powertrain Control Module circuit
- Dead (weak) battery
Description
PCM malfunction is the generic description for Mazda code P1342, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no other information about Mazda OBDII code P1342.
How to Fix
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or service engine soon warning light)