Archives: DTC Codes

What Does Code P0141 Mean? DTC P0141 signifies an “O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)”. This code indicates that the Powertrain Control Module (PCM), or Engine Control Module (ECM), has detected an electrical fault within the heating circuit of the oxygen sensor located downstream of the catalytic converter on the engine bank […]

What Does Code P0142 Mean? DTC P0142 indicates an electrical malfunction within the circuit of the third oxygen sensor (O2S) on Bank 1. “Bank 1” refers to the cylinder bank that contains cylinder #1, and “Sensor 3” designates the third oxygen sensor in the exhaust stream of that bank. This sensor is typically located downstream […]

What Does Code P0143 Mean? DTC P0143 indicates that the Engine Control Module (ECM), also known as the Powertrain Control Module (PCM), has detected an abnormally low voltage signal from the Bank 1 Sensor 3 oxygen sensor circuit. In automotive nomenclature, “Bank 1” refers to the cylinder bank that contains cylinder #1. “Sensor 3” denotes […]

What Does Code P0144 Mean? Diagnostic Trouble Code P0144 signifies an “O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)” condition. The Engine Control Module (ECM), also commonly referred to as the Powertrain Control Module (PCM), sets this code when it detects a sustained voltage output from the downstream oxygen sensor (Sensor 3) on Bank […]

What Does Code P0145 Mean? The Engine Control Module (ECM), also known as the Powertrain Control Module (PCM), continuously monitors the operational characteristics of all oxygen (O2) sensors within the exhaust system to ensure proper fuel mixture control and catalytic converter efficiency. Code P0145 specifically indicates an issue with the O2 sensor designated as Bank […]

What Does Code P0146 Mean? The diagnostic trouble code P0146 signifies “O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)”. This code indicates that the Engine Control Module (ECM) or Powertrain Control Module (PCM) has detected a lack of voltage fluctuation or a static voltage signal from the oxygen sensor located in Bank 1, […]

What Does Code P0147 Mean? DTC P0147 indicates a malfunction within the heater circuit of the Oxygen (O2) sensor positioned at Bank 1, Sensor 3. Bank 1 refers to the cylinder bank that contains cylinder #1. Sensor 3 identifies the third O2 sensor in the exhaust stream for that bank, typically a downstream sensor located […]

What Does Code P0150 Mean? DTC P0150 signifies an electrical malfunction within the circuit of the Bank 2 Sensor 1 oxygen (O2) sensor. This sensor is positioned upstream of the catalytic converter on the engine cylinder bank that does not contain cylinder #1. Its primary function is to measure the oxygen content in the exhaust […]

What Does Code P0151 Mean? DTC P0151 signifies an “O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)” condition. This code is triggered when the Powertrain Control Module (PCM), also known as the Engine Control Module (ECM), detects that the voltage output from the upstream oxygen sensor on Bank 2 is consistently below a specified […]

What Does Code P0152 Mean? DTC P0152 signifies that the Engine Control Module (ECM), also known as the Powertrain Control Module (PCM), has detected an excessively high voltage output from the Bank 2 Sensor 1 oxygen sensor circuit. Bank 2 refers to the engine side that does not contain cylinder number one, and Sensor 1 […]