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Home/DTC Codes/GMC/Envoy/2002-2009 4.2L I6/P0520
P0520

Engine Oil Pressure Sensor/Switch Circuit

2002-2009 GMC Envoy 4.2L I6

High SeverityPowertrainGeneric (SAE)

Description

Malfunction in the engine oil pressure sensor circuit.

Symptoms

  • Check Engine Light
  • Oil pressure warning light on
  • Gauge reading incorrect

Common Causes

  • Faulty oil pressure sensor/switch
  • Wiring damage
  • Low oil level
  • Low actual oil pressure

Diagnostic Steps

  1. CHECK OIL LEVEL FIRST
  2. Test oil pressure with mechanical gauge
  3. Test sensor resistance
  4. Inspect wiring
  5. Check oil pump condition

Repair Notes

ALWAYS verify actual oil pressure with mechanical gauge first. Low oil pressure can destroy an engine.

Related Codes

P0521Engine Oil Pressure Sensor/Switch Range/PerformanceP0522Engine Oil Pressure Sensor/Switch Low InputP0523Engine Oil Pressure Sensor/Switch High InputP0524Engine Oil Pressure Too Low

Other Powertrain Codes

P0520 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 2.8L I4 Duramax Diesel

GMC Canyon

2015-2022 3.6L V6

Common Questions

What does code P0520 mean on a 2002-2009 GMC Envoy?

P0520 stands for "Engine Oil Pressure Sensor/Switch Circuit". Malfunction in the engine oil pressure sensor circuit.

What are the symptoms of P0520 on a GMC Envoy?

Common symptoms of P0520 include: Check Engine Light, Oil pressure warning light on, Gauge reading incorrect.

What causes P0520 on a 2002-2009 GMC Envoy?

Common causes of P0520 include: Faulty oil pressure sensor/switch, Wiring damage, Low oil level, Low actual oil pressure.

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