Opel P0543 Intake Air Heater Incorrect Voltage

Description

OBD-II Trouble Code Description for P0543 Opel

Intake Air Heater “A” Circuit Open

What does this mean?

OBD2 Code P0543 Opel 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 Opel 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 Opel
– Engine Light ON (or Service Engine Soon Warning Light)

Causes

Possible causes of OBD code P0543 Opel
– 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 Opel:

2013 Opel Astra OPC,2013 Opel Adam,2012 Opel Zafira Tourer,2012 Opel Combo,2012 Opel Astra GTC,2012 Opel Ampera,2011 Opel Zafira,2011 Opel Meriva,2011 Opel Corsa,2011 Opel Astra,2011 Opel Antara,2010 Opel Insignia,2010 Opel Corsa,2010 Opel Astra,2008 Opel Corsa,2007 Opel GT,2007 Opel Corsa,2007 Opel Astra,2007 Opel Antara,2006 Opel Vectra,2006 Opel Meriva,2006 Opel Astra,2005 Opel Astra,2004 Opel Astra,2003 Opel Signum,2003 Opel Meriva

 

Note:

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