Powertrain Codes

Control module software needs to be updated, Vacuum leaks (intake manifold gaskets, vacuum hoses, PCV hoses, etc.), Mass air flow sensor, Plugged fuel filter or weak fuel pump, Plugged or dirty fuel injectors

Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable), Incorrect ignition timing, Vacuum leak(s), Low or weak fuel pressure, Improperly functioning EGR system, Defective Mass Air Flow Sensor, Defective Crankshaft and or Camshaft Sensor, Defective Throttle Position Sensor, Mechanical engine problems (i.e.—low compression, leaking head gasket(s), or valve problems)

Defective Engine Thermostat, Defective Engine Coolant Temperature Sensor, Defective Intake Air Temperature Sensor, Defective Cooling System, Low Engine Coolant, Dirty Engine Coolant causing incorrect Coolant Temperature Sensor readings, Defective/always running Engine Cooling fan(s)

Defective Intake Air Temperature Sensor, Dirty air filter, Defective Mass Air Flow Sensor, Faulty or corroded Intake Air Temperature Sensor wiring or connections

PCM software needs to be updated, Vacuum leaks (Intake Manifold Gaskets, vacuum hoses, PCV hoses, etc.), Faulty Mass Airflow (MAF) Sensor, Plugged Fuel Filter or weak Fuel Pump, Plugged or dirty Fuel Injectors

Camshaft variable timing solenoid failure, Engine oil level is too low, The engine is not timed correctly, The engine oil does not meet the manufacturer's requirements, Variable valve timing actuator failure, Worn timing chain

Camshaft variable timing solenoid failure, Engine oil level is too low, The engine is not timed correctly, The engine oil does not meet the manufacturer's requirements, Variable valve timing actuator failure, Worn timing chain

System too Rich (Bank 1)

Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable), Incorrect ignition timing, Vacuum leak(s), Low or weak fuel pressure, Improperly functioning EGR system, Defective Mass Air Flow Sensor, Defective Crankshaft and or Camshaft Sensor, Defective Throttle Position Sensor, Mechanical engine problems (i.e.—low compression, leaking head gasket(s), or valve problems)

Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable), Incorrect ignition timing, Vacuum leak(s), Low or weak fuel pressure, Improperly functioning EGR system, Defective Mass Air Flow Sensor, Defective Crankshaft and or Camshaft Sensor, Defective Throttle Position Sensor, Mechanical engine problems (i.e.—low compression, leaking head gasket(s), or valve problems)

Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable), Incorrect ignition timing, Vacuum leak(s), Low or weak fuel pressure, Improperly functioning EGR system, Defective Mass Air Flow Sensor, Defective Crankshaft and or Camshaft Sensor, Defective Throttle Position Sensor, Mechanical engine problems (i.e.—low compression, leaking head gasket(s), or valve problems)

Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable), Incorrect ignition timing, Vacuum leak(s), Low or weak fuel pressure, Improperly functioning EGR system, Defective Mass Air Flow Sensor, Defective Crankshaft and or Camshaft Sensor, Defective Throttle Position Sensor, Mechanical engine problems (i.e.—low compression, leaking head gasket(s), or valve problems)

Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)

Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B)

Large vacuum leaks, Split Intake Air Boot or PCV Hose, Defective intake manifold gaskets, Mass Airflow Sensor (MAF), Mass Air Flow Sensor circuit and or wiring problems, Defective Barometric Pressure Sensor, Dirty or contaminated Mass Air Flow Sensing wire or filament, PCM software needs to be updated

Turbocharger/Supercharger "A" Underboost Condition

Camshaft Position Sensor A Circuit Bank 1 or Single Sensor

The Mass Airflow Sensor (MAF) Sensor is unplugged or the wiring is damaged, Loose or corroded electrical terminals in the MAF Sensor circuit, Faulty MAF Sensor

Crankshaft Position Sensor A Circuit Malfunction

Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem

Defective Oxygen Sensor/Air Fuel Ratio Sensor, defective Oxygen Sensor/Air Fuel Ratio Sensor Heater Circuit, Exhaust System Leak, Intake Air System leak, Low Fuel Pressure, Defective Engine Coolant Temperature Sensor, Defective sensor wiring and or circuit problem, PCM software needs to be updated, Defective PCM

02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)

Fuel Rail/System Pressure - Too Low Bank 1

02 Sensor Circuit Low Voltage (Bank I Sensor 2)

02 Sensor Circuit High Voltage (Bank I Sensor 2)

Cylinder 5 Misfire Detected

Cylinder 6 Misfire Detected

Powertrain Control Module (PCM) failure, Variable valve timing actuator failure, Wiring issue

Camshaft variable timing solenoid failure, Engine oil level is too low, The engine is not timed correctly, The engine oil does not meet the manufacturer's requirements, Variable valve timing actuator failure, Worn timing chain

Engine Coolant Temperature Sensor Circuit 1 High Input

System too Rich (Bank 2)

Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)

HO2S Heater Control Circuit (Bank 1 Sensor 1)

HO2S Heater Control Circuit Low (Bank 1 Sensor 1)

HO2S Heater Control Circuit (Bank 1 Sensor 2)

HO2S Heater Control Circuit Low (Bank 1 Sensor 2)

Manifold Absolute Pressure/Barometric Pressure Sensor Circuit High

02 Sensor Circuit Low Voltage (Bank I Sensor I)

Camshaft Position Sensor A Circuit Range/Performance Bank 1 or Single Sensor

Accelerator Pedal Position (APP) assembly failure, Powertrain Control Module (PCM) failure, Throttle Position Sensor (TPS) failure, Wiring issue

System Too Lean Off Idle Bank 1

O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1

Powertrain Control Module (PCM) failure, Variable valve timing actuator failure, Wiring issue

Ambient Air Temperature Sensor Circuit High Input

Engine Coolant Temperature Sensor Circuit 1 Low Input

Throttle/Petal Position Sensor/Switch A Circuit Range/Performance Problem

Throttle/Petal Position Sensor/Switch A Circuit Low Input

Throttle/Petal Position Sensor/Switch A Circuit High Input

02 Sensor Circuit Slow Response (Bank 1 Sensor 1)

02 Sensor Circuit No Activity Detected (Bank I Sensor 1)

02 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)

02 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)

Fuel Rail Pressure Sensor Circuit Range/Performance Bank 1

Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)

Knock/Combustion Vibration Sensor B Circuit Low

Camshaft Position Sensor A Circuit Malfunction (Bank 2)

Ignition Coil A Primary/Secondary Circuit Malfunction

Accelerator Pedal Position (APP) assembly failure, Powertrain Control Module (PCM) failure, Throttle control motor failure, Wiring issue

Accelerator Pedal Position (APP) assembly failure, Powertrain Control Module (PCM) failure, Throttle Position Sensor (TPS) failure, Wiring issue

Engine coolant heater failure, Engine coolant level is too low, Thermostat failure

A Rocker Arm Actuator System Performance/Stuck Off Bank 1

Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor A)

"A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)

Manifold Absolute Pressure/Barometric Pressure Sensor Circuit Low

02 Sensor Circuit High Voltage (Bank I Sensor 1)

02 Sensor Circuit Malfunction (Bank I Sensor 2)

02 Sensor Circuit Slow Response (Bank 1 Sensor 2)

02 Sensor Circuit Low Voltage (Bank 2 Sensor 2)

Engine Misfire Detected on Startup (First 1000 Revolutions)

Ignition Coil B Primary/Secondary Circuit Malfunction

Ignition Coil D Primary/Secondary Circuit Malfunction

Camshaft Position Sensor "B" Circuit (Bank 1)

O2 Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1

O2 Sensor Signal Biased/Stuck Lean Bank 1 Sensor 2

"B" Camshaft Position -Timing Over-Retarded (Bank 1)

"A" Camshaft Position - Timing Over-Retarded (Bank 2)

"B" Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)

HO2S Heater Control Circuit High (Bank 1 Sensor 2)

MAP/MAF - Throttle Position Correlation

02 Sensor Circuit Malfunction (Bank I Sensor 1)

02 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)

02 Sensor Circuit High Voltage (Bank 2 Sensor 2)

Fuel Rail Pressure Sensor A Circuit High Input

Cylinder 7 Misfire Detected

Cylinder 8 Misfire Detected

Crankshaft Position Sensor A Circuit Range/Performance

Crankshaft Position Sensor A Circuit Intermittent

Camshaft Position Sensor A Circuit Intermittent Bank 1 or Single Sensor

Ignition Coil C Primary/Secondary Circuit Malfunction

Accelerator Pedal Position (APP) assembly failure, Powertrain Control Module (PCM) failure, Throttle control motor failure, Wiring issue

System Too Lean at Idle Bank 1

Barometric Pressure Sensor "A" Circuit Range/Performance

An internal PCM problem, A problem with the PCM power or ground circuit

Cylinder Deactivation System Bank 1

Defective Fuel Injector, Faulty or corroded Fuel Injector, wiring, and or connections, Plugged Fuel Injector, Dirt in the Fuel Injector

Powertrain Control Module (PCM) failure, Powertrain Control Module (PCM) power relay failure, Wiring issue