P0316 identifies Engine Misfire Detected on Startup First 1000 Revolutions. Diagnosis compares cylinder misfire counters, smooth-running values, cold-soak temperature, rail pressure, ignition energy, and first-start rpm so its electrical, control, and physical causes are separated before repair.
P0251 identifies Injection Pump Fuel Metering Control A Malfunction. Diagnosis compares metering-valve command and current, requested and actual rail pressure, low-pressure supply, engine speed, and injector return so its electrical, control, and physical causes are separated before repair.
P014A identifies O2 Sensor Delayed Response Rich to Lean Bank 2 Sensor 2. Diagnosis compares Bank 2 Sensor 2 lambda trace, upstream response, heater current, fuel trims, catalyst temperature, and exhaust sealing so its electrical, control, and physical causes are separated before repair.
P010A identifies Mass or Volume Air Flow B Circuit. Diagnosis compares MAF B signal, MAF A comparison, intake temperature, engine load, sensor supply, and harness movement so its electrical, control, and physical causes are separated before repair.
P2227 identifies Barometric Pressure Sensor A Circuit Range or Performance. Diagnosis compares barometric pressure, MAP with engine off, boost pressure, altitude, sensor reference voltage, and weather trend so its electrical, control, and physical causes are separated before repair.
P2111 identifies Throttle Actuator Control System Stuck Open. Diagnosis compares throttle target, both position tracks, motor current, accelerator tracks, intake pressure, and failsafe state so its electrical, control, and physical causes are separated before repair.
P0615 identifies Starter Relay Circuit Malfunction. Diagnosis compares start request, immobilizer authorization, relay command, terminal voltage, engine speed, selector or clutch status, and network state so its electrical, control, and physical causes are separated before repair.
P0551 identifies Power Steering Pressure Sensor Circuit Range or Performance. Diagnosis compares steering pressure signal, engine speed, steering angle, idle request, sensor supply, and pump noise so its electrical, control, and physical causes are separated before repair.
P0461 identifies Fuel Level Sensor A Circuit Range or Performance. Diagnosis compares left and right tank levels, calculated total fuel, transfer-pump state, resistance trace, refueling history, and vehicle angle so its electrical, control, and physical causes are separated before repair.
P0413 identifies Secondary Air Injection System Switching Valve A Circuit Open. Diagnosis compares secondary-air command, valve current, upstream lambda response, cold-start time, pump status, and control-line voltage so its electrical, control, and physical causes are separated before repair.
P0322 identifies Ignition or Distributor Engine Speed Input Circuit No Signal. Diagnosis compares cranking rpm, crank and cam synchronization, crank waveform, sensor supply, battery voltage, and stall history so its electrical, control, and physical causes are separated before repair.
P0218 identifies Transmission Fluid Over Temperature Condition. Diagnosis compares transmission fluid temperature, engine coolant temperature, converter slip, selected gear, input and output speeds, and cooling demand so its electrical, control, and physical causes are separated before repair.