Possible Causes
WARNING: This page is about a different car, the 2002 Mazda 626 and 2001 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
Following items are possible causes for DTC P1746 and P1747:
- Poor engine performance.
- Low battery voltage.
- Malfunctioning EPC solenoid.
- Damaged or corroded harness connection.
- Valve body malfunction.
- Transaxle overheating.