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PO715;PO500;PO421

Please show pictures of where the sensors are on the transmission for the speed sensors PO715 and PO500.

Also where is the PO421 o2 sensor located.
Vehicle: 2001 Mazda Protege 1.6

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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

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