View source for P334B/013131

== P334B/013131 - Charge Pressure Control Actuator: Mechanical Malfunction ==

==== Possible Symptoms ====

* Malfunction Indicator Light (MIL) and/or Exhaust Warning Lamp active
* Reduced Idle quality and Engine Performance

==== Possible Causes ====

* Faulty Charge Pressure Control Actuator
* Faulty Turbocharger
* Wiring issues to/from Charge Pressure Control Actuator
* Mechanical adjustment problem with Charge Pressure Control Actuator and Turbocharger.
** Engine Controller software issue with 1.2l TFSI engines.  ''See Special Notes''

==== Possible Solutions ====

* Check Charge Pressure Control Actuator and Turbocharger
* Check wiring to/from Charge Pressure Control Actuator
* Check the Mechanical adjustment of the Charge Pressure Control Actuator and Turbocharger
** Check TPIs for known Engine Controller software issues with 1.2l TFSI engines.  ''See Special Notes''

==== Special Notes ====

* When found in 1.2l TFSI engines check the [[Official Factory Repair Information]] for TPIs that cover known issues with this DTC in addition to [[P334C]].  The following TPIs may be helpful:
** Audi TPI# 2027809/9
** VW Commercial (i.e. VW Caddy) TPI# 2031930/1
** VW TPI# 2027485/7
* When found in the 1.4T engines after wastegate actuator or turbo replacement, this forum post may be helpful:
** https://forums.ross-tech.com/showthread.php?23664-Case-Study-1-4T-CZTA-P056E-and-P334B-after-new-turbo-install

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[[Category:Fault Codes]]