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Home >> Jeep >> 2017 >> Wrangler Sahara, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 59 (2.4L - DTCS P1500 To P2271) >> DTC Troubleshooting >> P2172-High Airflow/Vacuum Leak Detected (Instantaneous Accumulation) >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
VACUUM LEAK
ENGINE OILING SYSTEM ISSUE
RESTRICTION IN THE EXHAUST SYSTEM
INTERNAL ENGINE MECHANICAL COMPONENTS
HIGH RESISTANCE IN THE 5-VOLT SUPPLY CIRCUIT
HIGH RESISTANCE IN THE MAP SIGNAL CIRCUIT
HIGH RESISTANCE IN MAP SENSOR GROUND CIRCUIT
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
THROTTLE BODY
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .