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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1650 Or DTC P1651 >> Possible Causes

Possible Causes

Possible causes are:

PSP switch damaged.
SIG RTN circuit open or shorted to GND.
PSP circuit open or shorted to SIG RTN.
PCM damaged.

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