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Home >> Dodge and Ram >> 2010 >> Challenger SE >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0118 To P0160 >> P0151-O2 Sensor 2/1 Circuit Low >> Possible Causes

Possible Causes

Possible Causes 
(K43) O2 2/1 SIGNAL CIRCUIT SHORTED TO GROUND
(K902) O2 RETURN (UPSTREAM) CIRCUIT SHORTED TO GROUND
(K43) O2 2/1 SIGNAL CIRCUIT SHORTED TO THE (K902) O2 RETURN (UPSTREAM) CIRCUIT
2/1 OXYGEN SENSOR
POWERTRAIN CONTROL MODULE (PCM)

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

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