Land Rover P0543 Intake Air Heater Incorrect Voltage

Description

OBD-II Trouble Code Description for P0543 Land Rover

Intake Air Heater “A” Circuit Open

What does this mean?

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

Causes

Possible causes of OBD code P0543 Land Rover
– 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 Land Rover:

2013 Land Rover,2012 Land Rover,2011 Land Rover,2010 Land Rover,2009 Land Rover ,2008 Land Rover,2007 Land Rover,2006 Land Rover,2005 Land Rover,2004 Land Rover,2003 Land Rover,2002 Land Rover

 

Note:

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