Engine-Codes - Generic - P1618

P1618 Code - Sensor Reference Voltage 1 Erratic

- Code Popularity: 39,637 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC P1618?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty 5-Volt Sensor
  • 5-Volt Sensor harness is open or shorted
  • 5-Volt Sensor circuit poor electrical connection
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How to Fix the DTC P1618?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1618 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P1618 Code Mean?

With the ignition ON, the Diagnostic Trouble Code (DTC) will be set when the Powertrain Control Module (PCM) detects that the 5-Volt supply circuit voltage is below the minimum acceptable value.

P1618 Code - Sensor Reference Voltage 1 Erratic

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Code P1618 Information for Specific Makes

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