Diagnostic Aids

WARNING: This page is about a different car, the 1992 Geo Prizm. However, it is still accessible from the selected car via links, so may be relevant.

A misadjusted TPS may set a false Code 41.

Intermittent condition may be caused by rubbed-through insulation, or a wire broken inside the insulation. Check ECM harness connectors for backed-out or damaged terminals. If code is intermittent, see TESTS W/O CODES article in this section.

Fig 1: Code 41 Schematic (GSi), Throttle Position Sensor (TPS) Open Or Short Circuit

Fig 2: Code 41 Flow Chart (GSi), Throttle Position Sensor (TPS) Open Or Short Circuit