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Home/DTC Codes/GMC/Envoy/2002-2009 4.2L I6/P2420
P2420

EVAP Switching Valve Control Circuit High

2002-2009 GMC Envoy 4.2L I6

Low SeverityPowertrainGeneric (SAE)

Description

High signal on the EVAP switching valve circuit.

Symptoms

  • Check engine light

Common Causes

  • Open circuit
  • Short to power
  • Failed solenoid

Diagnostic Steps

  1. Measure circuit voltage
  2. Check for opens

Repair Notes

Replace valve or repair wiring.

Related Codes

P2419EVAP Switching Valve Control Circuit Low

Other Powertrain Codes

P2420 on Other Vehicles

GMC Acadia

2017-2024 2.5L I4

GMC Acadia

2017-2024 3.6L V6

GMC Canyon

2004-2012 2.8L I4

GMC Canyon

2004-2012 3.5L I5

GMC Canyon

2007-2012 2.9L I4

GMC Canyon

2007-2012 3.7L I5

GMC Canyon

2015-2022 3.6L V6

GMC Canyon

2023-2024 2.7L I4 Turbo

Common Questions

What does code P2420 mean on a 2002-2009 GMC Envoy?

P2420 stands for "EVAP Switching Valve Control Circuit High". High signal on the EVAP switching valve circuit.

What are the symptoms of P2420 on a GMC Envoy?

Common symptoms of P2420 include: Check engine light.

What causes P2420 on a 2002-2009 GMC Envoy?

Common causes of P2420 include: Open circuit, Short to power, Failed solenoid.

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