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Home >> Fiat >> 2016 >> 500 Turbo, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 41 (1.4L 16-Valve - DTCS P16AB-00 To U1463 - 500) >> DTC Troubleshooting >> P219A-00-Bank 1 Air-Fuel Ratio Imbalance >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
INTAKE MANIFOLD LEAK AT A SPECIFIC CYLINDER ON BANK 1
FUEL INJECTOR ISSUES AT A SPECIFIC CYLINDER ON BANK 1
IGNITION SYSTEM ISSUES AT A SPECIFIC CYLINDER ON BANK 1
CYLINDER COMPRESSION IMBALANCE
CARBON BUILD UP
VARIABLE VALVE TIMING ISSUES
VALVE TRAIN ISSUES

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