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AutoCodes - Generic - P2687

P2687 Code - Fuel Heater Relay Control Circuit

- Code Popularity: 18,896 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P2687?

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 Fuel Heater Relay
  • Fuel Heater Relay harness is open or shorted
  • Fuel Heater Relay circuit poor electrical connection
  • Faulty Engine Control Module (ECM)
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How to Fix the DTC P2687?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2687 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code P2687 Description

Ignition voltage is supplied to the coil side of the fuel heater relay whenever the ignition is On. The Engine Control Module (ECM) provides a ground to control the fuel heater relay. When the ECM is commanding the fuel heater On, the voltage of the control circuit should be low, near 0 V. When the ECM is commanding the fuel heater Off, the voltage of the control circuit should be high, near battery voltage. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the fuel heater relay control circuit is open for greater than 1 s.

OBDII Code P2687 - Fuel Heater Relay Control Circuit - AutoCodes.com
P2687 Code - Fuel Heater Relay Control Circuit

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Code P2687 comments

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