P0200

Injector Circuit Malfunction

P0201

Injector Circuit Malfunction – Cylinder 1

P0202

Injector Circuit Malfunction – Cylinder 2

P0203

Injector Circuit Malfunction – Cylinder 3

P0204

Injector Circuit Malfunction – Cylinder 4

P0205

Injector Circuit Malfunction – Cylinder 5

P0206

Injector Circuit Malfunction – Cylinder 6

P0207

Injector Circuit Malfunction – Cylinder 7

P0208

Injector Circuit Malfunction – Cylinder 8

P0209

Injector Circuit Malfunction – Cylinder 9

P0210

Injector Circuit Malfunction – Cylinder 10

P0211

Injector Circuit Malfunction – Cylinder 11

P0212

Injector Circuit Malfunction – Cylinder 12

P0213

Cold Start Injector 1 Malfunction

P0214

Cold Start Injector 2 Malfunction

P0215

Engine Shutoff Solenoid Malfunction

P0216

Injection Timing Control Circuit Malfunction

P0217

Engine Overtemp Condition

P0218

Transmission Over Temperature Condition

P0219

Engine Over Speed Condition

P0220

Throttle/Pedal Position Sensor/Switch B Circuit Malfunction

P0221

Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance Problem

P0222

Throttle/Pedal Position Sensor/Switch B Circuit Low Input

P0223

Throttle/Pedal Position Sensor/Switch B Circuit High Input

P0224

Throttle/Pedal Position Sensor/Switch B Circuit Intermittent

P0225

Throttle/Pedal Position Sensor/Switch C Circuit Malfunction

P0226

Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance Problem

P0227

Throttle/Pedal Position Sensor/Switch C Circuit Low Input

P0228

Throttle/Pedal Position Sensor/Switch C Circuit High Input

P0229

Throttle/Pedal Position Sensor/Switch C Circuit Intermittent

P0230

Fuel Pump Primary Circuit Malfunction

P0231

Fuel Pump Secondary Circuit Low

P0232

Fuel Pump Secondary Circuit High

P0233

Fuel Pump Secondary Circuit Intermittent

P0234

Turbocharger Overboost Condition

P0235

Turbocharger Boost Sensor A Circuit Malfunction

P0236

Turbocharger Boost Sensor A Circuit Range/Performance

P0237

Turbocharger Boost Sensor A Circuit Low

P0238

Turbocharger Boost Sensor A Circuit High

P0239

Turbocharger Boost Sensor B Circuit Malfunction

P0240

Turbocharger Boost Sensor B Circuit Range/Performance

P0241

Turbocharger Boost Sensor B Circuit Low

P0242

Turbocharger Boost Sensor B Circuit High

P0243

Turbocharger Wastegate Solenoid A Malfunction

P0244

Turbocharger Wastegate Solenoid A Range/Performance

P0245

Turbocharger Wastegate Solenoid A low

P0246

Turbocharger Wastegate Solenoid A High

P0247

Turbocharger Wastegate Solenoid B Malfunction

P0248

Turbocharger Wastegate Solenoid B Range/Performance

P0249

Turbocharger Wastegate Solenoid B Low

P0250

Turbocharger Wastegate Solenoid B High

P0251

Injection Pump Fuel Metering Control “A” Malfunction (Cam/Rotor/Injector)

P0252

Injection Pump Fuel Metering Control “A” Range/Performance (Cam/Rotor/Injector)

P0253

Injection Pump Fuel Metering Control “A” Low (Cam/Rotor/Injector)

P0254

Injection Pump Fuel Metering Control “A” High (Cam/Rotor/Injector)

P0255

Injection Pump Fuel Metering Control “A” Intermittent (Cam/Rotor/Injector)

P0256

Injection Pump Fuel Metering Control “B” Malfunction (Cam/Rotor/Injector)

P0257

Injection Pump Fuel Metering Control “B” Range/Performance (Cam/Rotor/Injector)

P0258

Injection Pump Fuel Metering Control “B” Low (Cam/Rotor/Injector)

P0259

Injection lump Fuel Metering Control “B” High (Cam/Rotor/Injector)

P0260

Injection Pump Fuel Metering Control “B” Intermittent (Cam/Rotor/Injector)

P0261

Cylinder 1 Injector Circuit Low

P0262

Cylinder 1 Injector Circuit High

P0263

Cylinder 1 Contribution/Balance Fault

P0264

Cylinder 2 Injector Circuit Low

P0265

Cylinder 2 Injector Circuit High

P0266

Cylinder 2 Contribution/Balance Fault

P0267

Cylinder 3 Injector Circuit Low

P0268

Cylinder 3 Injector Circuit High

P0269

Cylinder 3 Contribution/Balance Fault

P0270

Cylinder 4 Injector Circuit Low

P0271

Cylinder 4 Injector Circuit High

P0272

Cylinder 4 Contribution/Balance Fault

P0273

Cylinder 5 Injector Circuit Low

P0274

Cylinder 5 Injector Circuit High

P0275

Cylinder 5 Contribution/Balance Fault

P0276

Cylinder 6 Injector Circuit Low

P0277

Cylinder 6 Injector Circuit High

P0278

Cylinder 6 Contribution/Balance Fault

P0279

Cylinder 7 Injector Circuit Low

P0280

Cylinder 7 Injector Circuit High

P0281

Cylinder 7 Contribution/Balance Fault

P0282

Cylinder 8 Injector Circuit Low

P0283

Cylinder 8 Injector Circuit High

P0284

Cylinder 8 Contribution/Balance Fault

P0285

Cylinder 9 Injector Circuit Low

P0286

Cylinder 9 Injector Circuit High

P0287

Cylinder 9 Contribution/Balance Fault

P0288

Cylinder 10 Injector Circuit Low

P0289

Cylinder 10 Injector Circuit High

P0290

Cylinder 10 Contribution/balance Fault

P0291

Cylinder 11 Injector Circuit Low

P0292

Cylinder 11 Injector Circuit High

P0293

Cylinder 11 Contribution/balance Fault

P0294

Cylinder 12 Injector Circuit Low

P0295

Cylinder 12 Injector Circuit High

P0296

Cylinder 12 Contribution/Balance Fault

P0298

Engine Oil Over Temperature

System Too Lean – Bank 1

Description:

How does a P0171 code trigger the check engine light? This code will trigger the check engine light as follows:

The adaptive fuel strategy in the vehicle’s computer constantly monitors the fuel delivery system to make sure the engine is running at an optimum air to fuel ratio, which is 14.7:1. The computer adjusts injector pulse width to regulate the amount of fuel going into the engine. The oxygen sensors relay information to the Powertrain Control Module (computer), informing it of the oxygen content in the exhaust. This information is translated by the computer, and used to determine if more or less fuel is needed. The computer will then adjust fuel flow (and possibly other related engine operating characteristics), to keep the correct air fuel mixture. This loop continues as long as the engine is running. Please refer to our article Oxygen Sensor Code Diagnosis for more info on this system. A P0171 check engine light code is set when the computer has reached a rich calibration limit and can not add enough fuel to maintain the correct mixture.

Possible Causes:

Refer to our Oxygen Sensor Code Diagnosis article for a list of all possible causes. The following is an overview of P0171 check engine light code possible causes.

Fuel System:

Leaking or faulty fuel pressure regulator
Plugged or dirty fuel filter or lines
Fuel pump weak or defective check valve
Injectors leaking or faulty
Low fuel pressure or running out of fuel
Leaking EVAP system components
Faulty FRP (Fuel Rail Pressure Sensor)

Air Intake System

Vacuum leaks
Contaminated, damaged or faulty Mass Air Flow sensor
PCV valve leak or stuck open
Air induction turbulance caused by wrong filter
Oil dipstick not seated
Air leaks after the Mass Air Flow Sensor (MAF)
Oil coated aftermarket air filter

Exhaust System

Any exhaust leak before or near the oxygen sensors

EGR System

Vacuum line disconnected from EGR System Module (ESM)
EGR valve, tube or gasket leak
EGR vacuum regulator valve leaking

Secondary Air Injection System

Mechanically stuck secondary air injection valve

P0200 Injector Circuit
P0201 Injector Circuit – Cylinder 1
P0202 Injector Circuit – Cylinder 2
P0203 Injector Circuit – Cylinder 3
P0204 Injector Circuit – Cylinder 4
P0205 Injector Circuit – Cylinder 5
P0206 Injector Circuit – Cylinder 6
P0207 Injector Circuit – Cylinder 7
P0208 Injector Circuit – Cylinder 8
P0209 Injector Circuit – Cylinder 9
P0210 Injector Circuit – Cylinder 10
P0211 Injector Circuit – Cylinder 11
P0212 Injector Circuit – Cylinder 12

P0213 Cold Start Injector 1
P0214 Cold Start Injector 2
P0215 Engine Shutoff Solenoid
P0216 Injector/Injection Timing Control Circuit
P0217 Engine Coolant Over Temperature Condition
P0218 Transmission Fluid Over Temperature Condition
P0219 Engine Over Speed Condition

P0220 Throttle/Pedal Position Sensor/Switch “B” Circuit
P0221 Throttle/Pedal Position Sensor/Switch “B” Circuit Range/Performance Problem
P0222 Throttle/Pedal Position Sensor/Switch “B” Circuit Low Input
P0223 Throttle/Pedal Position Sensor/Switch “B” Circuit High Input
P0224 Throttle/Pedal Position Sensor/Switch “B” Circuit Intermittent
P0225 Throttle/Pedal Position Sensor/Switch “C” Circuit
P0226 Throttle/Pedal Position Sensor/Switch “C” Circuit Range/Performance Problem
P0227 Throttle/Pedal Position Sensor/Switch “C” Circuit Low Input
P0228 Throttle/Pedal Position Sensor/Switch “C” Circuit High Input
P0229 Throttle/Pedal Position Sensor/Switch “C” Circuit Intermittent

P0230 Fuel Pump Primary Circuit
P0231 Fuel Pump Secondary Circuit Low
P0232 Fuel Pump Secondary Circuit High
P0233 Fuel Pump Secondary Circuit Intermittent

P0234 Turbo/Super Charger Overboost Condition
P0235 Turbo/Super Charger Boost Sensor “A” Circuit
P0236 Turbo/Super Charger Boost Sensor “A” Circuit Range/Performance
P0237 Turbo/Super Charger Boost Sensor “A” Circuit Low
P0238 Turbo/Super Charger Boost Sensor “A” Circuit High
P0239 Turbo/Super Charger Boost Sensor “B” Circuit
P0240 Turbo/Super Charger Boost Sensor “B” Circuit Range/Performance
P0241 Turbo/Super Charger Boost Sensor “B” Circuit Low
P0242 Turbo/Super Charger Boost Sensor “B” Circuit High
P0243 Turbo/Super Charger Wastegate Solenoid “A”
P0244 Turbo/Super Charger Wastegate Solenoid “A” Range/Performance
P0245 Turbo/Super Charger Wastegate Solenoid “A” Low
P0246 Turbo/Super Charger Wastegate Solenoid “A” High
P0247 Turbo/Super Charger Wastegate Solenoid “B”
P0248 Turbo/Super Charger Wastegate Solenoid “B” Range/Performance
P0249 Turbo/Super Charger Wastegate Solenoid “B” Low
P0250 Turbo/Super Charger Wastegate Solenoid “B” High

P0251 Injection Pump Fuel Metering Control “A” (Cam/rotor/Injector)
P0252 Injection Pump Fuel Metering Control “A” Range/Performance (Cam/Rotor/Injector)
P0253 Injection Pump Fuel Metering Control “A” Low (Cam/Rotor/Injector)
P0254 Injection Pump Fuel Metering Control “A” High (Cam/Rotor/Injector)
P0255 Injection Pump Fuel Metering Control “A” Intermittent (Cam/Rotor/Injector)
P0256 Injection Pump Fuel Metering Control “B” (Cam/Rotor/Injector)
P0257 Injection Pump Fuel Metering Control “B” Range/Performance (Cam/Rotor/Injector)
P0258 Injection Pump Fuel Metering Control “B” Low (Cam/Rotor/Injector)
P0259 Injection Pump Fuel Metering Control “B” High (Cam/Rotor/Injector)
P0260 Injection Pump Fuel Metering Control “B” Intermittent (Cam/Rotor/Injector)

P0261 Cylinder 1 Injector Circuit Low
P0262 Cylinder 1 Injector Circuit High
P0263 Cylinder 1 Contribution/Balance
P0264 Cylinder 2 Injector Circuit Low
P0265 Cylinder 2 Injector Circuit High
P0266 Cylinder 2 Contribution/Balance
P0267 Cylinder 3 Injector Circuit Low
P0268 Cylinder 3 Injector Circuit High
P0269 Cylinder 4 Contribution/Balance
P0270 Cylinder 4 Injector Circuit Low
P0271 Cylinder 4 Injector Circuit High
P0272 Cylinder 4 Contribution/Balance
P0273 Cylinder 5 Injector Circuit Low
P0274 Cylinder 5 Injector Circuit High
P0275 Cylinder 5 Contribution/Balance
P0276 Cylinder 6Injector Circuit Low
P0277 Cylinder 6 Injector Circuit High
P0278 Cylinder 6 Contribution/Balance
P0279 Cylinder 7 Injector Circuit Low
P0280 Cylinder 7 Injector Circuit High
P0281 Cylinder 7 Contribution/Balance
P0282 Cylinder 8 Injector Circuit Low
P0283 Cylinder 8 Injector Circuit High
P0284 Cylinder 8 Contribution/Balance
P0285 Cylinder 9 Injector Circuit Low
P0286 Cylinder 9 Injector Circuit High
P0287 Cylinder 9 Contribution/Balance
P0288 Cylinder 10 Injector Circuit Low
P0289 Cylinder 10 Injector Circuit High
P0290 Cylinder 10 Contribution/Balance
P0291 Cylinder 11 Injector Circuit Low
P0292 Cylinder 11 Injector Circuit High
P0293 Cylinder 11 Contribution/Balance
P0294 Cylinder 12 Injector Circuit Low
P0295 Cylinder 12 Injector Circuit High
P0296 Cylinder 12 Contribution/Balance
P0298 Engine Oil Over Temperature

P0010 “A” Camshaft Position Actuator Circuit (Bank 1)
P0011 “A” Camshaft Position – Timing Over-Advanced or System Performance (Bank 1)
P0012 “A” Camshaft Position – Timing Over-Retarded (Bank 1)
P0013 “B” Camshaft Position – Actuator Circuit (Bank 1)
P0014 “B” Camshaft Position – Timing Over-Advanced or System Performance (Bank 1)
P0015 “B” Camshaft Position -Timing Over-Retarded (Bank 1)
P0020 “A” Camshaft Position Actuator Circuit (Bank 2)
P0021 “A” Camshaft Position – Timing Over-Advanced or System Performance (Bank 2)
P0022 “A” Camshaft Position – Timing Over-Retarded (Bank 2)
P0023 “B” Camshaft Position – Actuator Circuit (Bank 2)
P0024 “B” Camshaft Position – Timing Over-Advanced or System Performance (Bank 2)
P0025 “B” Camshaft Position – Timing Over-Retarded (Bank 2)
P0030 HO2S Heater Control Circuit (Bank 1 Sensor 1)
P0031 HO2S Heater Control Circuit Low (Bank 1 Sensor 1)
P0032 HO2S Heater Control Circuit High (Bank 1 Sensor 1)
P0033 Turbo Charger Bypass Valve Control Circuit
P0034 Turbo Charger Bypass Valve Control Circuit Low
P0035 Turbo Charger Bypass Valve Control Circuit High
P0036 HO2S Heater Control Circuit (Bank 1 Sensor 2)
P0037 HO2S Heater Control Circuit Low (Bank 1 Sensor 2)
P0038 HO2S Heater Control Circuit High (Bank 1 Sensor 2)
P0042 HO2S Heater Control Circuit (Bank 1 Sensor 3)
P0043 HO2S Heater Control Circuit Low (Bank 1 Sensor 3)
P0044 HO2S Heater Control Circuit High (Bank 1 Sensor 3)
P0050 HO2S Heater Control Circuit (Bank 2 Sensor 1)
P0051 HO2S Heater Control Circuit Low (Bank 2 Sensor 1)
P0052 HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0056 HO2S Heater Control Circuit (Bank 2 Sensor 2)
P0057 HO2S Heater Control Circuit Low (Bank 2 Sensor 2)
P0058 HO2S Heater Control Circuit High (Bank 2 Sensor 2)
P0062 HO2S Heater Control Circuit (Bank 2 Sensor 3)
P0063 HO2S Heater Control Circuit Low (Bank 2 Sensor 3)
P0064 HO2S Heater Control Circuit High (Bank 2 Sensor 3)
P0065 Air Assisted Injector Control Range/Performance
P0066 Air Assisted Injector Control Circuit or Circuit Low
P0067 Air Assisted Injector Control Circuit High
P0070 Ambient Air Temperature Sensor Circuit
P0071 Ambient Air Temperature Sensor Range/Performance
P0072 Ambient Air Temperature Sensor Circuit Low Input
P0073 Ambient Air Temperature Sensor Circuit High Input
P0074 Ambient Air Temperature Sensor Circuit Intermittent
P0075 Intake Valve Control Solenoid Circuit (Bank 1)
P0076 Intake Valve Control Solenoid Circuit Low (Bank 1)
P0077 Intake Valve Control Solenoid Circuit High (Bank 1)
P0078 Exhaust Valve Control Solenoid Circuit (Bank 1)
P0079 Exhaust Valve Control Solenoid Circuit Low (Bank 1)
P0080 Exhaust Valve Control Solenoid Circuit High (Bank 1)
P0081 Intake valve Control Solenoid Circuit (Bank 2)
P0082 Intake Valve Control Solenoid Circuit Low (Bank 2)
P0083 Intake Valve Control Solenoid Circuit High (Bank 2)
P0084 Exhaust Valve Control Solenoid Circuit (Bank 2)
P0085 Exhaust Valve Control Solenoid Circuit Low (Bank 2)
P0086 Exhaust Valve Control Solenoid Circuit High (Bank 2)

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