What is SPN 1076 & How to Solve It?

What is SPN 1076:

This code refers to a general fault in the engine coolant level circuit. It affects the engine’s ability to protect against overheating.

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Why This Happens

• Low coolant level in the tank.
• Faulty coolant level sensor.
• Damaged or shorted wiring in the sensor circuit.
• ECM not receiving a valid signal from the sensor.

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How to Fix It

1. Check and refill coolant to the proper level.
2. Inspect the coolant level sensor for contamination or damage.
3. Test wiring for continuity and grounding.
4. Replace the sensor if it fails testing.
5. Clear the fault and verify sensor output in diagnostics.

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How to Avoid It Before It Happens

1. Monitor coolant levels as part of daily pre-checks.
2. Replace coolant sensors every 12–18 months.
3. Keep connectors clean, tight, and dry.