Engine Trouble Codes

1st digit
P = Powertrain
B = Body
C = Chassis
U = Network

2nd digit
0 = Standard
1 = Manufacturer specific

3rd digit
1 = Emission management
2 = Injector circuit
3 = Ignition
4 = Auxiliary emission
5 = Vehicle speed & idle control
6 = Computer & output circuit
7 = Transmission

How To Reset Engine Trouble Code ?

All problems of your car are displayed through the engine lights on the front panel, after checking with OBD/OBD2 scanner tool and finishing fix process you need to reset/clear the code.

Step-By-Step clearing engine trouble code light on the panel :

1. Close the steering wheel.
2. There is an OBD II diagnostic port on the driver side and below the dashboard. Connect your code reader to the vehicle via cable. If you have a Bluetooth OBD2 scanner, take the help of this app.
3. Turn on the OBD2 scan tool and also your car.
4. If you wait for a while, you will see that the scanner has displayed trouble codes.
5. Then erase the code by pressing the clear button.

Clearing The OBD2-Code

The top 4 reasons a scan tool won't clear codes:

Fault codes are live faults
Incorrect code clear procedure
Scan tool faults
Scan tool won't communicate

These fault codes will appear on a two digit display found under the passenger seat. Note that although the display can indicate fault codes up to 99 not all numbers are valid codes. You read the codes by removing the side panel of the seat base or looking at the display under the back of the seat.

Check engine light comes on, here are some tips :

• Look for a serious problem that requires immediate attention.
• Try tightening your gas cap.
• Reduce speed and load.
• Use built-in diagnostic services.

Trouble In Clearing The Codes !

Common reasons a scan tool won't clear codes:

• Fault codes are live faults
• Incorrect code clear procedure
• Scan tool faults
• Scan tool won't communicate

Scan tools automatically communicate with the vehicle modules over the communication network. And determines some the engine codes as hard and soft ones. Hard codes are related fresh error codes in the vehicle system. Soft codes are based on hostorical old faults of the vehicle.

Similarly, after clearing the OBD/2 code, you need to reset your car. It's not a big deal. You can do it in a short time. Let's try to find out.

• Radio, watch need to be rebooted.
• Drive settings need to be fixed.
• Car's transmission - automatic transmission won't work, so there's nothing to fear. If you drive manually for a while, everything will be fine.

The backup system works in some cars. In that case, you don't need to do anything. A good aspect is that it saves your settings even after all the power ECU is eliminated.

Common Trouble Codes With Descriptions :

• P0455 - Evaporative Emission Control System Leak Detected Gross Leak
• P0442 - Evaporative Emission Control System Leak Detected Small Leak
• P0700 - Transmission Control System Malfunction
• P0456 - EVAP Control System Leak Detected Very Small Leak
• P0102 - Mass or Volume Air Flow Circuit Low Input
• P0446 - Multiple Displacement System Rationality Bank 2
• P0420 - Catalyst System Efficiency Below Threshold Bank 1
• P0171 - System Too Lean Bank 1
• P0300 - Cylinder Misfire Detected Random Cylinders