What is Komatsu Code E11 CA2249 & How to Solve It?

What is Komatsu Code E11 CA2249:

This code refers to an issue with the intake air temperature sensor signal being out of expected range. It impacts how the ECM calculates air-fuel mixture and engine performance.

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Why This Happens

• Faulty or degraded intake air temperature sensor.
• Wiring harness damage or loose connector.
• Corrosion at sensor terminals.
• Sensor signal drift due to age or overheating.

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How to Fix It

1. Inspect the intake air temperature sensor and clean if contaminated.
2. Test sensor resistance against temperature values.
3. Repair or replace damaged wiring or loose connectors.
4. Replace the sensor if resistance is out of range.
5. Clear the fault and verify accurate temperature readings in diagnostics.

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How to Avoid It Before It Happens

1. Inspect sensors and wiring during routine air intake system checks.
2. Protect connectors from water and dust intrusion.
3. Use manufacturer-recommended sensors for replacements.
4. Use Clue’s Preventive Maintenance to schedule regular inspections of sensors and wiring to ensure proper function and avoid air intake issues.