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Home >> Fiat >> 2016 >> 500 Turbo, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 66 (1.4L 16-Valve Turbo - DTCS P2102-00 To U1463 - 500) >> DTC Troubleshooting >> P2271-00-O2 Sensor 1/2 Signal Stuck Rich >> 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
EXHAUST LEAK
FUEL SYSTEM RELATED ISSUES
O2 SENSOR 1/2
POWERTRAIN CONTROL MODULE (PCM)

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

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