P0138 Code – O2 Sensor Circuit High Voltage
The P0138 diagnostic trouble code (DTC) indicates that the Engine Control Unit (ECU) has detected a high voltage signal from the oxygen sensor on Bank 1 Sensor 2. This sensor…
P0137 Code – O2 Sensor Circuit Low Voltage
The P0137 diagnostic trouble code (DTC) indicates that the Engine Control Unit (ECU) has detected a low voltage signal from the oxygen sensor on Bank 1 Sensor 2. The downstream…
P0136 Code – O2 Sensor Circuit Malfunction
The P0136 diagnostic trouble code (DTC) indicates a malfunction in the oxygen sensor circuit for Bank 1 Sensor 2. The downstream oxygen sensor (Sensor 2) is located after the catalytic…
P0134 Code – O2 Sensor Circuit No Activity Detected
The P0134 diagnostic trouble code (DTC) indicates that the Engine Control Unit (ECU) has detected no activity from the oxygen sensor on Bank 1 Sensor 1. The oxygen sensor (O2…
P0135 Code – O2 Sensor Heater Circuit Malfunction
The P0135 diagnostic trouble code (DTC) indicates a malfunction in the oxygen sensor heater circuit for Bank 1 Sensor 1. Modern vehicles use heated oxygen sensors (HO2S) to monitor exhaust…
P0132 Code – O2 Sensor Circuit High Voltage
The P0132 diagnostic trouble code (DTC) indicates that the Engine Control Unit (ECU) has detected an abnormally high voltage signal from the oxygen sensor circuit on Bank 1 Sensor 1.…
P0443 Code – EVAP Purge Control Valve Circuit Malfunction
The P0443 diagnostic trouble code (DTC) indicates a malfunction in the Evaporative Emission Control System (EVAP) purge control valve circuit. The EVAP system prevents fuel vapors from escaping into the…
P0112 Code – Intake Air Temperature Sensor Low Input
The P0112 diagnostic trouble code (DTC) indicates that the Engine Control Unit (ECU) has detected a low voltage signal from the Intake Air Temperature (IAT) sensor circuit. The IAT sensor…
P0441 Code – EVAP System Incorrect Purge Flow
The P0441 diagnostic trouble code (DTC) indicates that the Evaporative Emission Control System (EVAP) has detected an incorrect purge flow. The EVAP system prevents fuel vapors from escaping into the…
P0440 Code – EVAP System Malfunction (Causes, Symptoms, Fix)
The P0440 diagnostic trouble code (DTC) indicates that the vehicle’s Evaporative Emission Control System (EVAP) has detected a malfunction. The EVAP system is responsible for preventing fuel vapors from escaping…
