Your Oldsmobile O4 engine control system detects a problem, the computer stores the diagnostic trouble
code B0029 in its memory.
To figure out what is wrong with your vehicle you must first extract the B0029 DTC For Oldsmobile O4.
On 1999 and later B0029 Oldsmobile O4 engines, the instrument cluster has a built-in self-diagnostic mode that can be accessed by pressing and holding the instrument cluster SELECT/RESET button. Insert the ignition key and turn to the RUN position (but don't crank or start engine). Continue to press and hold the SELECT/RESET button (for 5 seconds) until the word TEST is displayed by the odometer. Release the SELECT/RESET button within three seconds after the word TEST is displayed to begin the self-diagnostic mode.
B0029 Oldsmobile O4 DTC Meaning
Body Code - Problem is antilock brake system, electronic suspension and steering systems.
SAE - Generic
Cruise Control Servo Indicates Low
A/C System High Pressure High Temperature
The original multi-displacement system turned off opposite pairs of cylinders, allowing the engine to have three different configurations and displacements. B0029 Oldsmobile O4 code had an elaborate diagnostics procedure, including showing engine trouble codes on the air conditionning display. However, the system was troublesome, misunderstood by customers, and a rash of unpredictable failures led to the technology being quickly retired.