Fuel Temperature Sensor A Circuit High Input

What This Means

The fuel temperature sensor A voltage is above the maximum expected threshold. This sensor monitors fuel temperature to compensate for fuel density changes.

Common Symptoms

• Check engine light on
• Minor fuel economy impact
• No noticeable driveability change
• Possible starting issues on diesels

Common Causes

• Faulty fuel temperature sensor
• Wiring damage
• Corroded connector
• Open or short circuit
• PCM input failure

Estimated Repair Cost