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2011 ACURA RL

3.5L V6AWDAUTOMATICgas
6 active safety recalls on this vehicle — view recalls
Repairs0Labor1182Torque7058Fluid15DTC1812Battery0Maintenance0Recalls6
P1491moderate severityPowertrain

EGR Valve Lift Insufficient

on 2011 Acura RL 3.5L V6 · AWD

What this code means

The EGR valve is not lifting enough to allow commanded exhaust gas recirculation.

Symptoms

  • CEL
  • Increased NOx
  • Failed emissions
  • Engine knock possible
  • Rough idle

Common causes

  • Carbon buildup
  • Faulty EGR valve
  • Clogged passages
  • Vacuum supply issue

Diagnostic steps

  1. Clean EGR passages
  2. Test EGR valve
  3. Check vacuum supply
  4. Inspect position sensor

Repair notes

Clean EGR system or replace valve.

Other Powertrain codes on this vehicle

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