OBD-I Codes List

Chrysler 23 Charge Temperature Sensor Circuit

Make
Chrysler (1983-1995)
Category
Powertrain - Fuel/Air Metering
Severity
Check Engine Light

How to read it

Code 23 reads as 2 flashes, pause, 3 flashes on the check-engine light. Cycle the ignition key on, off, on, off, then leave it on with the engine off, and count the flashes on the power loss or check-engine light.

New to flash codes? The How to Read Chrysler OBD-I Codes with the Key Cycle walks through the test and what the numbers mean. The general OBD-I guide covers the rest.

What does Chrysler code 23 mean?

Charge Temperature Sensor Circuit

Common causes of 23

  • Failed charge temperature sensor in the intake
  • Open or shorted sensor signal wire
  • Corroded or unplugged sensor connector
  • Sensor reading far off actual intake air temperature

How to fix 23

  1. Compare scan tool charge air temperature to actual ambient temperature
  2. Inspect the sensor connector and wiring for opens and corrosion
  3. Measure sensor resistance against the factory temperature chart
  4. Repair the open or shorted circuit before replacing the sensor
  5. Replace the sensor only if resistance is out of range
  6. Clear the code and retest with the engine warmed up

Source

Qualified source review

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Last updated 2026-10-10.

Report a correction for 23. Include your vehicle, the issue and a source if you have one.