What does DTC codes mean?

Diagnostic Trouble Code

A DTC, short for Diagnostic Trouble Code, is a code used to diagnose malfunctions in a vehicle or heavy equipment. While the malfunction indicator lamp (MIL)—also known as the check engine light—simply alerts drivers that there is an issue, a DTC identifies what and where the issue is.

What does DTC 1 mean?

Fuel and air metering

Third DTC Character
1 – Fuel and air metering. 2 – Fuel and air metering (injector circuit) 3 – Ignition systems or misfires. 4 – Emission controls. 5 – Vehicle speed control, idle control systems, and auxiliary inputs.

How Diagnostic Trouble Code works?

Diagnostic Trouble Codes or OBD2 Trouble Codes are codes that the car’s OBD system uses to notify you about an issue. Each code corresponds to a fault detected in the car. When the vehicle detects an issue, it will activate the corresponding trouble code.

How do you clear a DTC code?

Press the ERASE button on the scanner to clear the trouble code. Doing this will turn off the check engine light. Depending on the type of scanner, the ERASE or CLEAR button will get rid of the trouble codes permanently. Turn off the ignition and unplug the scanner from the OBD2 diagnostic port.

How many DTC codes are there?

There are around 11,000 definitions of these manufacturer codes—making it impossible to memorize them all. This is why you need the right equipment to read diagnostic trouble codes.

  P2723 CHEVROLET code

What does DTC 0 mean?

0 – Fuel and air metering and auxiliary emission controls. 1 – Fuel and air metering.

What does DTCs in this ECU mean?

Diagnostic Trouble Code

A DTC stands for Diagnostic Trouble Code. It is a code produced by an engines ECU, to assist in rapid fault correction. ECU’s do not use standard DTC and as such each engine manufacturer may have several different sets of codes for different engines.

What is a PD DTC code?

Permanent Diagnostic Trouble Codes (PDTCs) are very similar to regular Diagnostic Trouble Codes (DTCs). However, unlike regular DTCs, they cannot be reset by disconnecting the vehicle’s battery or cleared using an On-Board Diagnostic (OBD) scan tool.

Where can I read car codes for free?

If you have a problem with your car and you don’t know what it is, most auto part stores (such as AutoZone, Pep Boys and Advance Auto Parts) will provide a free diagnostic code reading. It is also called an OBD reading.