P0B09 OBD-II: AUXILIARY Transmission Fluid Pump Motor Supply Voltage
P0B09 Severity
Should you fix P0B09 yourself?
Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.
Proper diagnosis will save you time and money on unnecessary repairs.
Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.
What causes OBD-II fault code P0B09?
The auxiliary Transmission Fluid Pump is used to maintain fluid pressure in the transmission. If the pump does not operate as requested by the engine computer (PCM), code P0B09 is stored.
Need a P0B09 diagnosis? Trust our experts.
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OBD II Fault Code
- OBD II P0B09
OBD-II Code Increased fuel consumption is defined as a AUXILIARY Transmission Fluid Pump Motor Supply Voltage
The auxiliary Transmission Fluid Pump is used to maintain fluid pressure in the transmission. If the pump does not operate as requested by the engine computer (PCM), code P0B09 is stored.
Increased fuel consumption Symptoms
- Increased fuel consumption
Common Problems That Trigger the P0B09 Code
- Auxiliary transmission pump relay failure
- Powertrain Control Module (PCM) failure
- Wiring issue
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