What are the P codes?

P-codes are similar to zip codes and postal codes and are part of a data management system that provides unique reference codes to individual locations. These codes provide a systematic means of linking and exchanging data and analyzing relationships between them.

What are the engine codes?

What is a DTC? Diagnostic Trouble Codes, also known as engine fault codes, are five-digit codes that identify a particular problem in the car. These codes are displayed on the scanning tool when it’s connected to the OBD system. The five-digit DTC includes one letter usually followed by four numbers (e.g. P1234).

What are all the check engine light codes?

The most common diagnostic codes for check engine lights are:

  • Codes: P0171 – P0175 → Deals with sensing your oxygen levels. …
  • Codes: P0300 – P0305 → Deal with engine misfires. …
  • Codes: P0411, P0440, P0442, P0446, P0455 → Deal with the evaporative system. …
  • Code: P0401→ Deal with exhaust gas recirculation.

How do I read a pending code?

Zitat von Youtube: You can see that there are no check engine lights on and as mentioned at the beginning. With the pending code sometimes they can generate.

What does P mean in engine code?


The P means powertrain. The second P is not normal and may just be the scanner you are using. This vehicle does not use the second letter P.

What does the P indicate in a diagnostic trouble code?

P (powertrain) refers to the engine, transmission, fuel system, and associated accessories.

What does catalyst system low efficiency mean?

Code P0420 stands for “Catalyst System Efficiency Below Threshold (Bank 1).” Put simply, this code indicates that your car’s computer has detected underperformance from the Bank 1 catalytic converter. The P0420 Code indicates that your car’s computer has detected underperformance from the Bank 1 catalytic converter.

What are generic codes?

Standard or “generic” codes (sometimes called “P codes”) are a set of standardized diagnostic codes that turn on the check engine light and will be readable on any OBDII compatible vehicle regardless of the year and model.

What is system too lean?

The OBDII trouble code P0171 – System Too Lean (Bank 1) means that the engine air-fuel mixture is too lean, or there is too much air and too little fuel. Driving a car with the code P0171 can cause more damage to the engine over time, as when the engine runs lean, the combustion temperature is higher.

What does an EVAP leak cause?

If damage to the solenoid continues, it can also lead to your engine stalling out completely. The EVAP controls vapor. A leak within the system can impact how well your vehicle starts and stays running. Any issue with interrupted internal combustion may cause your engine to stall or refuse to start altogether.

Which o2 sensor causes check engine light?

Zitat von Youtube: Specific symptoms include engine light indicates a problem increased tailpipe emissions increased fuel consumption hesitation on acceleration stalling rough idling.