Archives: DTC Codes

What Does Code P0030 Mean? DTC P0030 indicates a malfunction within the heater control circuit of the Heated Oxygen Sensor (HO2S) located in Bank 1 Sensor 1. Bank 1 refers to the engine cylinder bank that contains cylinder number one, and Sensor 1 denotes the upstream oxygen sensor positioned before the catalytic converter. Modern HO2S […]

What Does Code P0031 Mean? The diagnostic trouble code P0031 stands for “HO2S Heater Control Circuit Low (Bank 1 Sensor 1)”. This code indicates that the Engine Control Module (ECM), often referred to as the Powertrain Control Module (PCM), has detected a voltage or current reading below its specified operational threshold in the heater control […]

What Does Code P0032 Mean? DTC P0032 indicates a detected fault within the heater control circuit for the Bank 1 Sensor 1 Heated Oxygen Sensor (HO2S). Specifically, the Engine Control Module (ECM) or Powertrain Control Module (PCM) has identified an abnormally “high” voltage condition or an open circuit within this heater’s electrical pathway. The HO2S […]

What Does Code P0033 Mean? The diagnostic trouble code P0033 signifies an issue within the electrical control circuit for the turbocharger/supercharger bypass valve, designated as ‘A’. The “control circuit low” aspect indicates that the Engine Control Module (ECM) or Powertrain Control Module (PCM) has detected a voltage or current level in this circuit that is […]

What Does Code P0034 Mean? DTC P0034 signifies an detected electrical anomaly within the control circuit for the Turbocharger/Supercharger Bypass Valve ‘A’. Specifically, the Engine Control Module (ECM) or Powertrain Control Module (PCM) has registered a voltage or current draw that is below a pre-calibrated, acceptable threshold for this circuit. This “low” condition often points […]

What Does Code P0035 Mean? DTC P0035 signifies “Turbocharger/Supercharger Bypass Valve Control Circuit High.” This code is set when the Engine Control Module (ECM) or Powertrain Control Module (PCM) detects an electrical signal in the bypass valve control circuit that is outside the specified operating parameters and consistently higher than expected. The turbocharger/supercharger bypass valve, […]

What Does Code P0036 Mean? The diagnostic trouble code P0036 signifies an issue within the heater control circuit for the Heated Oxygen Sensor (HO2S) located in Bank 1 Sensor 2. Bank 1 refers to the engine bank containing cylinder #1, and Sensor 2 denotes the post-catalytic converter (downstream) oxygen sensor. The primary function of an […]

What Does Code P0037 Mean? The diagnostic trouble code P0037 signifies a detected fault in the heater control circuit of the Heated Oxygen Sensor (HO2S) designated as Bank 1 Sensor 2 (B1S2). In automotive terminology, Bank 1 refers to the engine bank that contains cylinder number one, while Sensor 2 indicates the downstream oxygen sensor, […]

What Does Code P0038 Mean? The diagnostic trouble code P0038 signifies “HO2S Heater Control Circuit High (Bank 1 Sensor 2).” This code indicates that the Engine Control Module (ECM), often referred to as the Powertrain Control Module (PCM), has detected an abnormally high voltage or an open circuit condition within the heater circuit of the […]

What Does Code P0039 Mean? DTC P0039 stands for “Turbo/Super Charger Bypass Valve Control Circuit Range/Performance.” This code indicates that the Powertrain Control Module (PCM), also known as the Engine Control Module (ECM) or Engine Control Unit (ECU), has detected an electrical range or performance anomaly within the control circuit responsible for operating the turbocharger […]