Oxygen sensor codes

Every CheckLight guide in this code family.

• P0030 HO2S Heater Control Circuit (Bank 1, Sensor 1)
• P0135 O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
• P0138 O2 Sensor Circuit High Voltage (Bank 1, Sensor 2)
• P0141 O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)

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