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Dodge and Ram
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2003
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Durango Base, 5.9 Z, 4WD, Part Time
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Self-Diagnostics - 5.9L
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Diagnostic Tests
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DTC P0136: O2 Sensor 1/2 Heater Circuit Malfunction
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Possible Causes
Possible Causes
O2 Sensor Heater Relay
(F142) Fused ASD Relay Output Circuit
(K512) O2 Sensor Heater Relay Control Circuit Open
(K512) O2 Sensor Heater Relay Control Circuit Shorted To Ground
PCM