Difference between revisions of "16804/P0420/001056"

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==== Possible Causes ====
 
==== Possible Causes ====
  
* Oxygen Sensor(s) defective
+
* Leakage in Intake and/or Exhaust System
* Oxygen Sensor(s) Control defective
+
* Catalyst faulty
 +
* Oxygen Sensor(s) faulty
 +
* Oxygen Sensor(s) Control faulty
  
 
==== Possible Solutions ====
 
==== Possible Solutions ====
  
 +
* Check Intake and Exhaust System for Leaks
 +
* Check Catalyst
 
* Check Oxygen Sensor(s)
 
* Check Oxygen Sensor(s)
 
* Check Oxygen Sensor(s) Control
 
* Check Oxygen Sensor(s) Control
* Perform Oxygen Sensor(s) Aging Check
+
** Perform Oxygen Sensor(s) Aging Check
  
 
==== Special Notes ====
 
==== Special Notes ====

Revision as of 18:34, 15 April 2008

16804/P0420/001056 - Catalyst System; Bank 1: Efficiency Below Threshold

Possible Causes

  • Leakage in Intake and/or Exhaust System
  • Catalyst faulty
  • Oxygen Sensor(s) faulty
  • Oxygen Sensor(s) Control faulty

Possible Solutions

  • Check Intake and Exhaust System for Leaks
  • Check Catalyst
  • Check Oxygen Sensor(s)
  • Check Oxygen Sensor(s) Control
    • Perform Oxygen Sensor(s) Aging Check

Special Notes