Description
OBD-II Trouble Code Description for P0543 Subaru
Intake Air Heater “A” Circuit Open
What does this mean?
OBD2 Code P0543 Subaru definition:
The engine control module (ECM) uses an intake air heater (IAH) to warm the incoming air for proper cylinder combustion. The ECM grounds the control coil of the IAH relay to energize the heater during cold operation. The ECM sends a bias voltage on diagnostic circuits one and two. If this voltage is not pulled low when the relay is OFF, or is high with the relay ON, DTC P0543 Subaru will set. The ECM will only store info on first failure, It triggers the SES light on the second failure.
Symptoms
Possible sumptoms of OBD code P0543 Subaru
– Engine Light ON (or Service Engine Soon Warning Light)
Causes
Possible causes of OBD code P0543 Subaru
– Inatake air heater circuit open or shorter – Faulty intake air heater relay – Faulty intake air hearter
Possible Solutions
The OBD2 Code Information Be Applicable For Subaru:
2013 Subaru WRX Concept,2013 Subaru Viziv Concept,2013 Subaru Outback,2013 Subaru Legacy,2013 Subaru Impreza,2013 Subaru BRZ,2012 Subaru XV,2012 Subaru Impreza,2011 Subaru XV Concept,2011 Subaru Outback,2011 Subaru Impreza,2011 Subaru Forester,2010 Subaru Legacy,2010 Subaru Impreza,2009 Subaru Impreza,2008 Subaru Impreza,2008 Subaru Forester,2006 Subaru Impreza,2005 Subaru R1,2005 Subaru Pleo,2004 Subaru Impreza,2004 Subaru Forester,2003 Subaru Traviq
Note:
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