What is a Passenger Presence module?
The Passenger Presence Module consists of an electronic control module, a pressure sensor mat in the seat, a harness, and passenger air bag on/off indicators. The Passenger Presence Module transmits and receives a low-level electric field.
When does the trouble code b0081 set?
Code B0081 often sets when the SDM cannot communicate with the PPS module. Before condemning the PPS module, the circuit between the SDM and PPS should be checked. This can be done using a digital multimeter (DMM). In addition, the PPS module’s circuit should be checked for proper power and ground. In some cases, the PPS module may be the problem.
What does it mean when the SDM says b0081?
Code B0081 indicates the SDM has detected a problem with the PPS module. The SDM will default to disabling the passenger airbag when this code is set. Code B0081 is typically caused by one of the following: Sometimes B0081 can pop up intermittently. This is especially true if the code is a history code and not current.
What is the Sub-code for the passenger presence system?
Sub-code 3A indicates the sensing and diagnostic module (SDM) has determined the incorrect passenger presence system module is installed. Sub-code 4B indicates the passenger presence system module is not calibrated.
How does the PPS work in a car?
Airbag / Image source. A sensor in the front passenger seat informs the PPS computer (referred to as a module) as to whether or not an adult-sized occupant is sitting in the seat. To do this, the sensor transmits and receives a low-level electric field into the seat.
Code B0081 often sets when the SDM cannot communicate with the PPS module. Before condemning the PPS module, the circuit between the SDM and PPS should be checked. This can be done using a digital multimeter (DMM). In addition, the PPS module’s circuit should be checked for proper power and ground. In some cases, the PPS module may be the problem.
Code B0081 indicates the SDM has detected a problem with the PPS module. The SDM will default to disabling the passenger airbag when this code is set. Code B0081 is typically caused by one of the following: Sometimes B0081 can pop up intermittently. This is especially true if the code is a history code and not current.
How to get the b0081 air bag code?
If the SDM detects that the PPS has set a current DTC, the SDM will then disable the instrument panel (I/P) module deployment loop, set DTC B0081, and command the AIR BAG indicator ON. Ignition voltage is between 9-16 volts.
What is the OnStar weight sensor code b0081?
Onstar reports this code: B0081 – and search indicates that it’s the passenger weight sensor in the seat. We had this recall done about 3 years ago – but I think it’s unrelated (copied below). Bottom line – has anyone else had this failure – and what did it cost to fix? How much was the part? Any DIY’s try to do it themselves?