Difference between revisions of "16816/P0432"

From Ross-Tech Wiki
 
(6 intermediate revisions by the same user not shown)
Line 3: Line 3:
 
==== Possible Symptoms ====
 
==== Possible Symptoms ====
  
* * Malfunction Indicator Light (MIL) ON
+
* Malfunction Indicator Light (MIL) ON
  
 
==== Possible Causes ====
 
==== Possible Causes ====
  
* Failed ceramic monolith in Catalyst
+
* Failed Ceramic Monolith in Catalyst
* Failed O2 sensors
+
* Oxygen Sensor(s) defective
* Leak in exhaust system
+
* Leak in Exhaust System
* Firmware issue with ECM
+
* Firmware issue with Engine Control Module (ECM)
  
 
==== Possible Solutions ====
 
==== Possible Solutions ====
  
* Inspect cat for internal rattle, replace if needed.
+
* Inspect Catalyst  for internal rattle
* Perform Readiness Test for Catalyst.
+
* Check Oxygen Sensor(s)
* Confirm Pre and Post O2 Sensor are working to design.
+
* Check Oxygen Sensor(s) Control
* Confirm there are no exhaust leaks.
+
* Perform Oxygen Sensor(s) Aging Check
* Check ECM to see if there is a firmware update.
+
* Set Readiness
 +
* Check for Leaks in Exhaust
 +
* Check ECM for firmware updates
  
 
==== Special Notes ====
 
==== Special Notes ====

Latest revision as of 15:19, 9 February 2011

16816/P0432 - Main Catalyst: Bank 2: Efficiency Below Threshold

Possible Symptoms

  • Malfunction Indicator Light (MIL) ON

Possible Causes

  • Failed Ceramic Monolith in Catalyst
  • Oxygen Sensor(s) defective
  • Leak in Exhaust System
  • Firmware issue with Engine Control Module (ECM)

Possible Solutions

  • Inspect Catalyst for internal rattle
  • Check Oxygen Sensor(s)
  • Check Oxygen Sensor(s) Control
  • Perform Oxygen Sensor(s) Aging Check
  • Set Readiness
  • Check for Leaks in Exhaust
  • Check ECM for firmware updates

Special Notes

  • For Audi engine codes ART or AKB, please see TSB 26-04-01
  • For Audi engine code ATQ, please see TSB 26-08-07
  • For Volkswagen engines, please see TSB 01-07-07
  • As per TSB 01-07-54, do not replace the ECM for this DTC. Please see TSB for complete details.