P015C Code: Meaning, Causes, and Symptoms | OBD2 Codes

P015C – Oxygen Sensor Delayed Response Rich to Lean Bank 2 Sensor 1


P015C: DIY Repairing Video Tutorial


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P015C Possible Symptoms

  Engine Light ON (or Service Engine Soon Warning Light),High Fuel Consumption,Excessive Smoke from Exhaust  

P015C Possible Causes

  Faulty Heated Oxygen Bank 2 Sensor 1,Heated Oxygen Bank 2 Sensor 1 harness is open or shorted,Heated Oxygen Bank 2 Sensor 1 circuit poor electrical connection,Inappropriate fuel pressure,Faulty fuel injectors,Intake air leaks may be faulty,Exhaust gas leaks  

P015C Description

  The Powertrain Control Module (PCM) or Engine Control Module (ECM) continuously monitors the Heated Oxygen Sensor (HO2S) activity. During the monitor period the PCM/ECM counts the number of times that the HO2S responds from rich to lean and from lean to rich and adds the amount of time it took to complete all transitions. With this information, the PCM/ECM can determine the average time for all transitions. If the average response time is too slow, a DTC sets.