Fault Code 23-MPI-1984


Notes:  For multi-port injected (turbo), 1984 models only

Description: Air charge temperature sensor signal out of range
Power loss light:  On
Limp-in mode:  Charge temperature of 70^F is assumed

Possible Causes

Charge temperature sensor failure - The sensor should measure 5,290 ohms to 5,610 ohms at 77^F.  On 2.2L and 2.5L engines, this sensor is located on the intake manifold.

Bad connection or wiring - Check the wiring and connections between the sensor and the logic module (or SMEC).  Clean and regrease any corroded connectors with dielectric grease.

Diagnostic Method

Trigger Parameters

- Sensor output less than 0.157V or greater than 3.76V

Results If Component Fails

Fault code 23 is stored, the power loss light is turned on, and the logic module will enter limp-in mode, assuming a charge temperature of 70^F.
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This page is maintained by Russell W. Knize and was last updated 08/28/98. Comments? Questions? Send email.

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