P0200-P0299 – Fuel and Air Metering (Injector Circuit). OBD-II

  • 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
  • P020A Cylinder 1 Injection Timing
  • P020B Cylinder 2 Injection Timing
  • P020C Cylinder 3 Injection Timing
  • P020D Cylinder 4 Injection Timing
  • P020E Cylinder 5 Injection Timing
  • P020F Cylinder 6 Injection Timing
  • 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 Overspeed Condition
  • P021A Cylinder 7 Injection Timing
  • P021B Cylinder 8 Injection Timing
  • P021C Cylinder 9 Injection Timing
  • P021D Cylinder 10 Injection Timing
  • P021E Cylinder 11 Injection Timing
  • P021F Cylinder 12 Injection Timing
  • P0220 Throttle/Pedal Position Sensor/Switch B Circuit Malfunction
  • P0221 Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance
  • 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
  • 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
  • P022A Charge Air Cooler Bypass Control “A” Circuit Open
  • P022B Charge Air Cooler Bypass Control “A” Circuit Low
  • P022C Charge Air Cooler Bypass Control “A” Circuit High
  • P022D Charge Air Cooler Bypass Control “B” Circuit Open
  • P022E Charge Air Cooler Bypass Control “B” Circuit Low
  • P022F Charge Air Cooler Bypass Control “B” Circuit High
  • 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 Engine Turbocharger/Supercharger Overboost Condition

Error Code P0234 is a diagnostic trouble code for “Turbocharger Overboost Condition.” This code appears when boost pressure sensor input signal receives excessive pressure, more than the optimum stated input pressure. In the simplest of terms, this code suggests that the PCM identifies a threatening high boost pressure from the engine’s forced induction unit. The immoderate boost can play an atrocious role in compromising the structural integrity of the engine.

The most common tell-tale sign is, of course, the activation of the Check Engine light. However, there are other symptoms too including: loss of power or no turbocharger boost, overheating engine, overheating transmission or harsh transmission, misfiring of the ignition, and engine knocking or pinging especially on acceleration etc. It is also entirely possible for the engine to operate just fine until the immoderate overboost bursts out a seal or gasket.

Like any other error code, there are several causes of the appearance of this particular code too. Therefore, identifying the specific cause can prove to be quite challenging to the untrained. Anyway, some of the possible causes of error code P0234 are: damaged or sticking turbocharger, defective turbocharger boost sensor or actuator, and corroded or faulty turbocharger boost sensor connectors or wirings etc.

  • 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
  • P023A Charge Air Cooler Coolant Pump Control Circuit Open
  • P023B Charge Air Cooler Coolant Pump Control Circuit Low
  • P023C Charge Air Cooler Coolant Pump Control Circuit High
  • P023D Manifold Absolute Pressure – Turbocharger/Supercharger Boost Sensor “A” Correlation
  • P023E Manifold Absolute Pressure – Turbocharger/Supercharger Boost Sensor “B” Correlation
  • P023F Fuel Pump Secondary Circuit/Open
  • 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
  • P024A Charge Air Cooler Bypass Control “A” Range/Performance
  • P024B Charge Air Cooler Bypass Control “A” Stuck
  • P024C Charge Air Cooler Bypass Position Sensor “A” Circuit
  • P024D Charge Air Cooler Bypass Position Sensor “A” Circuit Range/Performance
  • P024E Charge Air Cooler Bypass Position Sensor “A” Circuit Low
  • P024F Charge Air Cooler Bypass Position Sensor “A” Circuit High
  • 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 Injector)
  • P0258 Injection Pump Fuel Metering Control B Low (Cam/Rotor/Injector)
  • P0259 Injection Pump Fuel Metering Control B High (Cam/Rotor/Injector)
  • P025A Fuel Pump Module Control Circuit/Open
  • P025B Fuel Pump Module Control Circuit Range/Performance
  • P025C Fuel Pump Module Control Circuit Low
  • P025D Fuel Pump Module Control Circuit High
  • 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/Range Fault
  • P0297 Vehicle Overspeed Condition
  • P0298 Engine Oil Over Temperature Condition
  • P0299 Turbocharger/Supercharger “A” Underboost Condition

PO299 code is rather common diagnostic trouble code that indicates an underboost condition. It implies that the turbo has excessively low output. There are several different factors that can spark the appearance of the P0299 code and some of them include: faulty turbo, defect in the EGR system, air or intake leak or restriction, low oil pressure in the engine, and defective boost pressure sensor etc.

What are the possible symptoms of this particular code?

The vehicle can experience several different symptoms ranging from mild to severe problems. The appearance of the P0299 code can result in some rather severe mechanical problems especially if not dealt with.

A vehicle may go into a limp mode because of the P0299 code. In addition to that, the automobile can also experience a lack of engine power. In some cases, vehicles produce mechanical noise too owing to the failure of the turbo. If the problem is caused due to the malfunction of the turbocharger unit, it can even result in costly engine damage.

There are many things you can do to fix the P0299 code. For instance, you may be required to replace the turbo.. The task at hand might even require you to repair the intake system or the low engine oil pressure. You might also be able to solve the issue by replacing the EGR or the boost pressure sensor as well.

Thank You !!