Question about 1995 Jeep Grand Cherokee

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What do i do for code 23 - 1995 Jeep Grand Cherokee

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Nice Jeep, I have one '93 GC Limited 5.2L V8, monster engine!!!!

About your fault code, this 23 MAT sensor or circuit, and this appears when the air charge temperature sensor signal is out of range - that is, giving a voltage not expected by the computer programmers. The power limited light will come on and the computer will assume that the temperature from the sensor is 70° F. On turbo models, the air charge sensor is located on the intake manifold. On TBI models (fuel injected, no turbocharger) the sensor is referred to as the throttle body temperature sensor and is located on the throttle body.

Possible Reasons for Chrysler Computer Fault Code 23:
- Defective Air Charge Temperature Sensor - The sensor should measure 5,290 ohms to 5,610 ohms at 77 degrees for the 1984 model year. For later models, the measurement should be between 9,120 and 10,880 ohms at 77 degrees.
- Poor wiring or connection - Read the page 'How to troubleshoot drivability issues'. Check the wiring and connections between the sensor and the logic module. Check the harness from the sensor to the computer. Inspect every connector. Clean and re-grease the connectors with dielectric grease. When setting ignition timing it may be necessary to disconnect the sensor from the harness.

Hope helps (remmeber to comment and rate this)


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- read_check_engine_codes
- yourself_ecu_reset_procedure

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Posted on Sep 29, 2010

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fault code 23.Inlet air temperature sensor signal showed an air temperature below -22� F after the engine has been running for 5 minutes,,,,,code 23: MAT low temp indication, sets if the manifold air temperature sensor connections or wires are open for 3 seconds

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