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Home >> Geo >> 1995 >> Prizm LSi, 1.8 8, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 1.8L >> DTC Charts >> DTC 31, Map Sensor, Open Or Shorted Circuit >> Diagnostic Procedures

Diagnostic Procedures

If DTCs 22, 24 and 41 are also set, problem is open in sensor ground circuit. An intermittent condition may be caused by poor connection, rubbed-through insulation, or a broken wire inside insulation. Check PCM harness connectors for backed-out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal-to-wire connections before component replacement.

Fig 1: DTC 31 Schematic (Prizm 1.8L - VIN 8) MAP Sensor, Open Or Shorted Circuit
G95C31809
Fig 2: DTC 31 Diagnostic Flow Chart (Prizm 1.8L - VIN 8) MAP Sensor, Open Or Shorted Circuit
G95F31810