P0715 Input / Turbine speed sensor circuit malfunction
P0500 VSS (vehicle speed sensor) malfunction
P0421 Warm up catalyst system efficiency below threshold
![]()
![]()
As for P0421 this is the warm up catalyst this is right at the front attached to the exhaust manifold , there is the warm up catalytst and the down stream 02 sensor monitor the W/U catayst
More...
P0500 VSS (vehicle speed sensor) malfunction
P0421 Warm up catalyst system efficiency below threshold
As for P0421 this is the warm up catalyst this is right at the front attached to the exhaust manifold , there is the warm up catalytst and the down stream 02 sensor monitor the W/U catayst
More...