OBDII DTC Doctor

DTC Doctor archive

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These OBDII Check Engine Light Trouble Code walkthroughs will help you clear your check engine light issues and any OBDII or smog related problems you may have. We’ve broken out our guides in easy to read format, allowing you to pick the OBDII check engine trouble code help you need.

OBD is the On-Board Diagnostics of your vehicle’s ECU or PCM, capable of testing many different facets of your vehicle and engine to ensure maximum performance and efficiency. These set of self diagnostic tests can test everything from your powertrain to your chassis or sensor issues.

The Engine Control Module (ECM) or Powertrain Control Module (PCM) monitors the engine for  conditions that can cause an issue with your engine or vehicle. If the ECM or PCM detects a potential problem, a warning light called a “malfunction indicator light” (MIL) on the dashboard is illuminated to alert the driver of a problem. This light is usually identified by the words “Check Engine,” “Service Engine Soon,” or the word “Check” along with an engine symbol.

FAQ : The OBDII Trouble Code and You

By OBDII Trouble Code :

• DTC P0011 Intake Camshaft Position Sensor Over Advance

  
  
• DTC P0068 – How To Test a Chrysler Sebring MAP Sensor
• DTC P0068 – How To Service a Ford Fiesta MAP Sensor
• DTC P0100 – How To Test a Nissan Sentra MAF Sensor
• DTC P0100 – How To Test a Nissan Altima MAF
• DTC P0100 – How To Test a Nissan Frontier MAF

• DTC P0101 – How To Test a VQ35 MAF

  
  

• DTC P0101 – How to Service LS1 MAF

  
  

• DTC P0107 – How To Test your LS1 MAP Sensor

  
  

• DTC P0107 – How To Service Your MAP Sensor

  
  
• DTC P0107 – How To Measure a Honda Accord MAP Signal
• DTC P0108 – How To Service Acura Integra MAP Sensor

• DTC P0108 – How To Service Your Honda Civic MAP Sensor

  
  

• DTC P0109 – MAP Sensor Circuit High Voltage

  
  
• DTC P0113 – How To Test a Chevy Colorado IAT
• DTC P0118 – How To Replace Engine Coolant Sensor
• DTC P0118 – How To Change a Honda Accord ECT

• DTC P0120 – How To Service a 240SX Throttle Position Sensor

  
  
• DTC P0121 – How To Test a Chevy S10 TPS
• DTC P0121 – How To Change a WRX Throttle Body

• DTC P0123 – How To Service Your TPS Sensor

  
  

• DTC P0131 – How to Service Your Honda 02 Sensor

  
  

• DTC P0138 – How to Service Your 02 Sensors

  
  
• DTC P0155 – How To Test a LQ4 Oxygen Sensor
• DTC P0171 – How To Find Intake Leaks
• DTC P0171 – How To Replace a Honda Accord FPR

• DTC P0171 – How To Service a Cadillac ATS MAF

  
  

• DTC P0174 – How To Replace a Ford Flex MAF

  
  

• DTC P0174 – How To Service a Ford Taurus MAF

  
  
• DTC P0128 – How To Install a 350Z Thermostat
• DTC P0120 – How To Test a Nissan Sentra TPS
• DTC P0121 – How To Test a Corolla TPS

• DTC P0127 – Replacing the IAT Sensor in a 350Z

  
  

• DTC P0135 – How To Service Your 02 Sensors

  
  
• DTC P0150 – How To Test a Infiniti QX4 Oxygen Sensor
• DTC P0155 – How To Test a LQ4 Oxygen Sensor
• DTC P0325 – How To Replace a VQ35 Knock Sensor

• DTC P0327 – How To Replace Your Knock Sensor

  
  
• DTC P0325 – How To Change a Honda Accord Knock Sensor
• DTC P0335 – How To Change a 2JZGE Crank Position Sensor
• DTC P0335 – How To Change a Honda Accord Crankshaft Position Sensor
• DTC P0335 – How To Test a Ford Focus Crankshaft Position Sensor

• DTC P0335 – How To Service Your Crank Position Sensor

  
  

• DTC P0335 – How to Service a VQ35 Crank Position Sensor

  
  
• DTC P0336 – How To Test a Escalade Crank Position Sensor
• DTC P0330 – How To Replace a 2JZ Knock Sensor

• DTC P0340 – How To Service a Scion XB Camshaft Position Sensor

  
  

• DTC P0345 – How To Service a VQ35 Camshaft Position Sensor

  
  

• DTC P0420 – How To Install a Check Engine Light Eliminator

  
  

• DTC P0455 – How To Service Infiniti Evap System

  
  
• DTC P0505 – How To Replace Idle Air Control Valve

• DTC P0505 : How To Service your IAC

  
  
• DTC P0507 – How To Replace a VQ35 Throttle Body

• DTC P0507 – How To Test Idle Air Control

  
  

• DTC P0661 – How To Service Your IMRC

  
  

• DTC P0753 – How To Service an Accord TCC Solenoid

  
  

• DTC P1121 – How to Service your Civic Throttle Position Sensor

  
  

• DTC P1122- How To Test a Honda Accord TPS

  
  

• DTC P1128 – MAP Signal Lower Than Expected – My Pro Street

  
  

• DTC P1129 – How To Service an Accord MAP Sensor

  
  

• DTC P1145 – How to Service Your VTC Solenoid Valve

  
  
• DTC P1258 – How To Replace your GMC Sierra ECT
• DTC P1349- How To Replace a VVTi Oil Control Filter