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Home >> Chrysler >> 2011 >> 300 Base, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 100 (6.7L Diesel - DTCS - P21C4 To U1601 - 3500 Cab & Chassis) >> Diagnosis and Testing >> P2609-Intake Air Heater System Performance >> Code Description >> Possible Causes

Possible Causes

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Possible Causes 
VEHICLE BEING JUMP STARTED OR CHARGED WITH AN EXTERNAL VOLTAGE SOURCE
(A19) AUXILIARY BATTERY CABLE OPEN/HIGH RESISTANCE
(A58) INTAKE AIR HEATER CIRCUIT OPEN/HIGH RESISTANCE
INTAKE AIR HEATER RELAY
INTAKE AIR HEATER

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE - 6.7L  .