P2558 Fault Code

Engine Coolant Level Sensor/Switch Circuit Low

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2558 fault code indicates that the engine coolant level sensor or switch circuit is reporting a low voltage, suggesting that the coolant level may be too low or that there is an electrical issue. Proper engine cooling is crucial, and a low coolant level may lead to overheating and significant engine damage if not addressed promptly.

What are the symptoms of the P2558 code?

Drivers may notice symptoms such as:

• An illuminated check engine light on the dashboard.
• Overheating engine due to insufficient coolant levels.
• Erratic engine performance or misfires if the engine management system is affected.
• Unusual surging or fluctuations in engine temperature.

What causes the P2558 code?

Several factors can trigger the P2558 code, including:

• Low engine coolant level due to leakage, evaporation, or improper filling.
• A faulty coolant level sensor that's malfunctioning or damaged.
• Damaged wiring or poor electrical connections in the sensor circuit.
• A blown fuse that impacts the sensor operation.

How to fix P2558?

To resolve the P2558 code, consider the following steps:

• Check the engine coolant level and top it up if necessary to the recommended level in the vehicle's manual.
• Inspect the coolant level sensor for damage or corrosion and replace it if faulty.
• Examine the wiring and connectors for signs of wear or disconnection; repair as needed.
• Replace any blown fuses and ensure a proper electrical connection to the sensor.