DTC P0141: Heated Oxygen Sensor No. 2 Heater Circuit Malfunction: Condition

DTC is set when HO2S No. 2 heater output voltage is to low when vehicle is operating under high load conditions, or HO2S No. 2 heater output voltage is to high when operating under any other condition. This is a continuous monitor. MIL is illuminated when Powertrain Control Module (PCM) detects malfunction during 2 consecutive drive cycles. Possible causes are:

• Open or short to ground in circuit between HO2S No. 1 and PCM.
• PCM malfunction.