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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 601 (3.0L Diesel - DTCS P05EF-00 To P2002-00 - 1500) >> Diagnosis And Testing >> P1286-00-NOX Sensor 1/1 Zero Offset Too High >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2014 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
ENGINE MISFIRE
EXCESSIVE FUEL OR OIL INTRODUCED INTO THE EXHAUST SYSTEM
FAULTY DEF INJECTOR
DIESEL EXHAUST FLUID CRYSTALLIZATION OR DEPOSITS
NOx SENSOR 1/1 DRIFTED OUT OF RANGE

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