Leak Diagnostic Unit Valve Signal Too High

Table of contents

P2420 VOLVO Possible Causes

  • Faulty Leak Diagnostic Unit Valve
  • Leak Diagnostic Unit Valve harness is open or shorted
  • Leak Diagnostic Unit Valve circuit poor electrical connection

How do I fix code P2420 VOLVO?

  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’s pins.

Cost of diagnosing the P2420 VOLVO code

  The cost of diagnosing the P2420 VOLVO code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

P2420 VOLVO Description

  The Diagnostic Trouble Code (DTC) is stored i the Engine Control Module (ECM) registers that the signal from the valve in the pump for the leak diagnostic is too high when the valve is activated.


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