Key to Finding Diagnostic Trouble Codes

Key To Finding Diagnostic Trouble Codes

P Codes

P type codes for engine controls are located under Computers and Control Systems.
P type codes for electronic transmission controls are located under Powertrain Management/Transmission Control System.

B Codes

B type codes on the specific vehicle can be generated from several different modules. It is best to look under the specific module from which you are accessing the code from (i.e. door control module -> door; cruise control module -> cruise control; steering column control module -> steering column; etc.).

C Codes

C type codes for antilock brakes and traction control systems can be found under Brakes and Traction Control
C type codes for electronically controlled suspension systems are located under Steering and Suspension