OBD-II Diagnostic Trouble Code
P0543
Intake Air Heater “A” Circuit Open
P
Powertrain
engine / trans
engine / trans
0
Generic
SAE standard
SAE standard
5
Speed / idle / inputs
43
Intake Air Heater “A” Circuit Open
Severity · general guide
Moderate
Fix soon — usually won't strand you
Code type
Generic
System
Powertrain
Standard
ISO/SAE Controlled
Fault type
Circuit/Open