How the Diagnostic Trouble Code is created: A DTC is made up of 5 digits. The chart below shows the composition of a DTC. With this information you can easily determine what system to trouble shoot without knowing the exact description of the code.

X X X X X
| | | |
| | | |
B Body ----------+ | | +-- Fault (00 to 99)
C Chassis -------+ | |
P Powertrain ----+ | |
U Network -------+ | +------ 1 Fuel & Air Metering
| +------ 2 Fuel & Air Metering (Injector)
| +------ 3 Ignition System or Misfire
0 SAE --------------+ +------ 4 Auxiliary Emission Controls
1 MFG --------------+ +------ 5 Vehicle Speed & Idle Control System
+------ 6 Computer Output Citcuit
+------ 7 Transmission
+------ 8 Transmission
+------ 9 Reserved
+------ 0 Reserved

DTC - DTC Descriptor (Modules that sets the DTC)
B0001 - PCM Discrete Input Speed Signal Error
B0004 - PCM Discrete Input Speed Signal Not Present
B0005 - In Park Switch Circuit Malfunction
B0012 - Right Front/Passenger Frontal Deployment Loop Circuit
B0013 - Right Front/Passenger Frontal Deployment Loop Circuit
B0014 - Right Front/Passenger Frontal Deployment Loop Circuit
B0016 - Right Front/Passenger Frontal Deployment Loop (Single Stage or Stage 1) Resistance Low
B0017 - Right Front/Passenger Frontal Deployment Loop (Single Stage or Stage 1) Open
B0018 - Right Front/Passenger Frontal Deployment Loop (Single Stage or Stage 1) Short to Ground/Voltage Out of Range
B0022 - Left Front/Driver Frontal Deployment Loop (Single Stage or Stage 1) Resistance Low
B0024 - Left Front/Driver Frontal Deployment Loop (Single Stage or Stage 1) Short to Ground/Voltage Out of Range
B0026 - Left Front/Driver Frontal Deployment Loop (Single Stage or Stage 1) Open
B0028 - Right Front/Passenger Side Deployment Loop Resistance Low
B0029 - Right Front/Passenger Side Deployment Loop Open
B0030 - Right Front/Passenger Side Deployment Loop Short to Ground/Voltage Out of Range
B0035 - ADS Closed/Shorted to Ground
B0036 - ADS Open/Missing/Shorted to Battery
B0037 - AUX switch closed/shorted to ground
B0038 - AUX switch open/shorted to battery
B0040 - Left Front/Driver Side Deployment Loop Resistance Low
B0041 - Left Front/Driver Side Deployment Loop Open
B0042 - Left Front/Driver Frontal Deployment Loop Circuit
B0043 - Left Front/Driver Frontal Deployment Loop Circuit
B0044 - Left Front/Driver Frontal Deployment Loop Circuit
B0045 - Left Front Side Deploy Loop Short to Ground/Voltage Out of Range
B0051 - Deployment Commanded
B0053 - Deployment Commanded with Loop Malfunctions Present
B0057 - Right Front/Passenger Pretensioner Deployment Loop Resistance Low
B0058 - Right Front/Passenger Pretensioner Deployment Loop Open
B0059 - Right Front/Passenger Pretensioner Deployment Loop Short to Ground/Voltage Out of Range
B0061 - Roof Rail Module-Left Deployment Loop Circuit
B0062 - Roof Rail Module-Left Deployment Loop Circuit
B0064 - Left Front/Driver Pretensioner Deployment Loop Resistance Low
B0065 - Left Front/Driver Pretensioner Deployment Loop Open
B0066 - Left Front/Driver Pretensioner Deployment Loop Short to Ground/Voltage Out of Range
B0068 - Roof Rail Module-Left Deployment Loop Circuit
B0069 - Roof Rail Module-Right Deployment Loop Circuit
B0070 - Roof Rail Module-Right Deployment Loop Circuit
B0071 - Roof Rail Module-Right Deployment Loop Circuit
B0073 - Supplemental Deployment Loop #1 Resistance Low
B0074 - Supplemental Deployment Loop #1 Open
B0075 - Supplemental Deployment Loop #1 Short to Ground/Voltage Out of Range
B0077 - Left Front/Driver Side Impact Sensor (SIS) Malfunction
B0078 - Right Front/Passenger SIS Malfunct