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P0687 Isuzu Code - Engine Control Module Power Relay Control Circuit High

- Code Popularity: 7,534 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0687 Isuzu?

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 Engine Control Module (ECM) power relay
  • ECM power relay harness is open or shorted
  • ECM power relay circuit poor electrical connection
  • Faulty ECM
⚠ Does your Isuzu have Safety Recalls? → Check here

How to Fix the DTC P0687 Isuzu?

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 P0687 Isuzu 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 P0687 Isuzu Description

The Engine Control Module (ECM) monitors the power inputs. The ECM sets the OBDII code when the ECM detects a high power voltage input.

OBDII Code P0687 Isuzu - Engine Control Module Power Relay Control Circuit High - AutoCodes.com
P0687 Isuzu Code - Engine Control Module Power Relay Control Circuit High

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Code P0687 Isuzu comments

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