DTC P0202-00: Fuel Injector Circuit/Open Cylinder No. 2: Outline

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0202:00 (PCM, SKYACTIV-G) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Fuel injector circuit/open cylinder No. 2
Detection condition	If the fuel injection verification signal is not input at 25 times continuously even though the PCM drives the fuel injector No. 2, the PCM determines that there is an open circuit in the fuel injector No. 2 control circuit. Precondition Battery voltage: 10.5 V or more Fuel injection control: except during fuel cut
Fail-safe	Not applicable
Possible cause	Fuel injector No. 2 connector or terminals malfunction PCM connector or terminals malfunction Short to ground in any of the following fuel injector No. 2 circuits. Control (+) circuit Control (-) circuit Short to power supply in fuel injector No. 2 control (-) circuit Open circuit in any of the following fuel injector No. 2 circuits. Control (+) circuit Control (-) circuit Fuel injector No. 2 malfunction PCM malfunction
Courtesy of MAZDA MOTORS CORP.