What is Komatsu Code CA2249 & How to Solve It?

What is Komatsu Code CA2249:

This code is typically associated with the intake air temperature sensor signal being out of range, which affects engine efficiency and emissions control.

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Why This Happens

• Intake air temperature sensor is damaged or degraded.
• Signal wire is loose or corroded.
• ECM is receiving a high or low voltage beyond calibrated limits.
• The sensor connector has moisture or debris.

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How to Fix It

1. Test the sensor resistance and signal voltage.
2. Replace the intake air temperature sensor if readings are off.
3. Repair or clean the sensor connector and wiring.
4. Clear the code and monitor air temperature values in diagnostics.

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How to Avoid It Before It Happens

1. Keep air sensors clean and dry.
2. Replace intake sensors at OEM-recommended intervals.
3. Secure wiring away from high vibration zones.