P2604 OBD II Trouble Code Intake Air Heater A Circuit Range Performance

How to diagnose, repair, and info on symptoms and causes of a P2604 engine code which applies to diesel vehicles with an air intake heater. This is a circuit problem that relates to range or performance. Also includes links to relevant forum discussions on the code.

Symptoms of P2604 OBD II Trouble Code

Common Causes of P2604 OBD II Trouble Code

Severity of P2604 OBD II Trouble Code

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