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Home >> Chrysler >> 2009 >> PT Cruiser Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 65 (DTCS P2433 To U1110) >> P2448-Secondary Air Injection System High Airflow - Bank 1 >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2009 Dodge Caliber. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
LEAK IN THE SECONDARY AIR SYSTEM
(F343) FUSED MAIN RELAY OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE
(K157) MAF SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE
(K157) MAF SENSOR SIGNAL CIRCUIT SHORT TO GROUND
(K157) MAF SENSOR SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
(K957) MAF SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE
SECONDARY AIR PUMP ASSEMBLY
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure  .