Archives: DTC Codes

What Does Code P1178 Mean? DTC P1178 is a manufacturer-specific diagnostic trouble code typically indicating an issue with the upstream Oxygen (O2) sensor or Air/Fuel (A/F) sensor circuit on Bank 1. While the precise definition can vary by manufacturer (e.g., “O2 Sensor Heater Circuit Malfunction – Bank 1 Sensor 2” for some Ford models, or […]

What Does Code P1180 Mean? DTC P1180 indicates a malfunction within the fuel delivery system, specifically pointing to a lean condition or insufficient fuel delivery below the commanded specifications. The Engine Control Module (ECM) or Powertrain Control Module (PCM) sets this code when it detects that the engine is consistently running lean, despite its efforts […]

What Does Code P1181 Mean? DTC P1181 signifies a detected malfunction within the fuel delivery system, specifically indicating a condition where the Engine Control Module (ECM), often referred to as the Powertrain Control Module (PCM), observes an unexpectedly high fuel delivery rate or an excessive fuel pressure condition. This code is often manufacturer-specific, but generally […]

What Does Code P1182 Mean? Diagnostic Trouble Code (DTC) P1182 indicates an electrical circuit malfunction within the Fuel Shut-Off (FSO) solenoid system. This code is primarily associated with diesel engines or certain gasoline direct injection (GDI) systems that utilize a dedicated solenoid valve to control the flow of fuel to the high-pressure fuel pump, fuel […]

What Does Code P1183 Mean? DTC P1183 signifies an observed malfunction within the Engine Oil Temperature (EOT) sensor circuit. The Powertrain Control Module (PCM), also referred to as the Engine Control Module (ECM), utilizes the EOT sensor to monitor the precise temperature of the engine oil. This sensor is typically a Negative Temperature Coefficient (NTC) […]

What Does Code P1184 Mean? DTC P1184 signifies that the Engine Control Module (ECM), also commonly referred to as the Powertrain Control Module (PCM), has detected an inconsistency or an implausible reading from the Engine Oil Temperature (EOT) sensor circuit during a self-diagnostic test. This code is typically manufacturer-specific, but its core meaning revolves around […]

What Does Code P1185 Mean? DTC P1185 signifies a fault within the Fuel Pump Temperature Sensor (FTS) circuit, specifically indicating an excessively high temperature reading from the sensor. The Engine Control Module (ECM), also known as the Powertrain Control Module (PCM), monitors the electrical signal from the FTS to determine the temperature of the fuel […]

What Does Code P1186 Mean? DTC P1186 signifies “Fuel Pump Temperature Sensor Low,” indicating that the Engine Control Module (ECM), also commonly referred to as the Powertrain Control Module (PCM), is receiving an abnormally low voltage signal from the Fuel Pump Temperature Sensor (FTS). This low voltage typically translates to an implausibly high resistance reading […]

What Does Code P1187 Mean? The diagnostic trouble code P1187, often classified as an OEM-specific code rather than a universally defined SAE code, typically indicates an issue with “Variant Selection.” In most applications, particularly prevalent in Ford vehicles, this code signifies that the Powertrain Control Module (PCM) has detected an inconsistency or mismatch in the […]

What Does Code P1188 Mean? The diagnostic trouble code P1188 signifies a Calibration Memory Fault within the Engine Control Module (ECM), also commonly referred to as the Powertrain Control Module (PCM). This code indicates that the ECM has detected an internal error related to its non-volatile memory (NVM), which is responsible for storing critical adaptive […]