Diagnostic Aids

WARNING: This page is about a different car, the 2004 Pontiac Sunfire and 2004 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

DTC B1000 may be stored as a history DTC without affecting the operation of the module. If stored only as a history DTC and not retrieved as a current DTC, do not replace the module.
If DTC B1000 is retrieved as both a current and history DTC, replace the module that set the DTC.

DTC B1000

Step	Action	Yes	No
1	Did you perform the Diagnostic System Check for the system exhibiting the symptom?	Go to Step 2	Go to Control Module References for the applicable Diagnostic System Check
2	Install a scan tool. Turn ON the ignition, with the engine OFF. Retrieve DTCs with the scan tool. Is DTC B1000 retrieved as a current DTC?	Go to Step 3	Go to Diagnostic Aids
3	IMPORTANT: Perform the programming or setup procedure for the module, if required. Replace the control module that set DTC B1000 as current. Refer to Control Module References for the replacement procedure.Did you complete the replacement?	Go to Step 4	-
4	Clear the DTCs with the scan tool. Operate the vehicle within the Conditions for Running the DTC. Does DTC B1000 reset?	Go to Step 2	System OK