22
UnclassifiedSensors
What This Code Means
"Limp-home" operating mode; Overall decrease in operating performance and efficiency; Rich running (black smoke) until "closed loop" operation is initiated; Stumble or misfire on hard acceleration; Erratic operation
Possible Causes
- •24 Pin (MSE 1.0) Plastic-Cased ECU: Intermittent 5 volt source from ECU (pin circuit 14)
- •24 Pin (MSE 1.0) Plastic-Cased ECU: Pin circuits 4, 8, and/or 14 damaged (wiring, connectors)
- •24 Pin (MSE 1.0) Plastic-Cased ECU: Pin circuits 4, 8, and/or 14 routed near noisy electrical signal (coils, alternator)
- •35 Pin (MA 1.7) Metal-Cased ECU: Intermittent 5 volt source from ECU (pin circuit 25)
- •35 Pin (MA 1.7) Metal-Cased ECU: Pin circuits 12, 25 and/or 27 damaged (wiring or connectors)
- •35 Pin (MA 1.7) Metal-Cased ECU: Pin circuits 12, 25 and/or 27 routed near noisy electrical signal (coils, alternator)
- •TPS - Open or Short Circuit to Ground
- •TPS - Short Circuit to Battery
- •TPS Sensor connector or wiring
- •TPS Sensor loose on throttle body manifold
- •TPS Sensor output affected or disrupted by dirt, grease, oil, wear, or breather tube position (must be to side opposite the TPS)
- •Throttle Position Sensor failure or signal implausibility
- •Throttle shaft or bearings worn/damaged
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