16816/P0432

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Revision as of 16:28, 9 February 2011 by Jef (talk | contribs) (Created page with '== 16816/P0432 - Main Catalyst: Bank 2: Efficiency Below Threshold == ==== Possible Symptoms ==== * MIL on ==== Possible Causes ==== * Failed ceramic monolith in Catalyst * F…')

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Table Of Contents

1. 16816/P0432 - Main Catalyst: Bank 2: Efficiency Below Threshold
- 1.1.1 Possible Symptoms
- 1.2.1 Possible Causes
- 1.3.1 Possible Solutions
- 1.4.1 Special Notes

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

Possible Symptoms

MIL on

Possible Causes

Failed ceramic monolith in Catalyst
Failing O2 sensors
Leak in exhaust system
Firmware issue with ECM

Possible Solutions

Inspect cat for internal rattle, replace if needed.
Perform Readiness test for Catalyst.
Confirm pre and post O2 sensor are working to design.
Confirm there are no exhaust leaks.
Check ECM to see if there is a firmware update.

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.

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