P0B09 Code - Auxiliary Transmission Fluid Pump Motor Supply Voltage Circuit/Open
Quick Answer
The Engine Control Module (ECM) monitors the Auxiliary Transmission Fluid Pump Motor. Common causes include Faulty Auxiliary Transmission Fluid Pump, Auxiliary Transmission Fluid Pump harness is open or shorted, Auxiliary Transmission Fluid Pump circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0B09 indicates Auxiliary Transmission Fluid Pump Motor Supply Voltage Circuit/Open.
- Common causes
- Common causes include Faulty Auxiliary Transmission Fluid Pump, Auxiliary Transmission Fluid Pump harness is open or shorted, Auxiliary Transmission Fluid Pump circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0B09 Description
What are the Possible Causes of the DTC P0B09?
- Faulty Auxiliary Transmission Fluid Pump
- Auxiliary Transmission Fluid Pump harness is open or shorted
- Auxiliary Transmission Fluid Pump circuit poor electrical connection
How to Fix the DTC P0B09?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0B09 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- P0B09 Buick — Auxiliary Transmission Fluid Pump Supply Voltage Relay Control Circuit
- P0B09 Cadillac — Auxiliary Transmission Fluid Pump Supply Voltage Relay Control Circuit
- P0B09 Chevrolet — Auxiliary Transmission Fluid Pump Supply Voltage Relay Control Circuit
- P0B09 GMC — Auxiliary Transmission Fluid Pump Supply Voltage Relay Control Circuit
Frequently Asked Questions about P0B09 Code
1. What are the common symptoms of OBDII code P0B09?
- Common symptoms include difficulty shifting gears, transmission slipping, illuminated check engine light, and reduced fuel efficiency.
2. What could be the possible causes of the Auxiliary Transmission Fluid Pump Motor Supply Voltage Circuit/Open code?
- The code P0B09 can be caused by a faulty auxiliary transmission fluid pump motor, damaged wiring or connectors in the circuit, or a blown fuse related to the transmission pump.
3. How can I diagnose the issue related to OBDII code P0B09?
- To diagnose the issue, a technician may perform a visual inspection of the pump motor, check the wiring and connectors for any damage, test the voltage supply to the pump, and inspect related fuses.
4. Can driving with the OBDII code P0B09 cause further damage to the vehicle?
- Continuing to drive with the P0B09 code may lead to further damage to the transmission system, potentially resulting in more costly repairs if left unresolved.
5. How can I repair the Auxiliary Transmission Fluid Pump Motor Supply Voltage Circuit/Open issue?
- Repairing the issue may involve replacing the faulty auxiliary transmission fluid pump motor, repairing or replacing damaged wiring or connectors, and ensuring proper voltage supply to the pump.
6. Is it safe to continue driving my vehicle with the OBDII code P0B09 present?
- It is not recommended to continue driving the vehicle with the P0B09 code as it can affect the transmission's performance and potentially lead to more severe issues.
7. Are there any DIY tips for addressing the OBDII code P0B09?
- DIY tips may include checking the transmission pump fuse, inspecting the wiring and connectors for visible damage, and ensuring the pump motor is receiving the correct voltage.
8. How much does it typically cost to repair OBDII code P0B09?
- The cost of repairing the P0B09 code can vary depending on the extent of the issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.
9. Can a mechanic easily reset the OBDII code P0B09 after fixing the issue?
- Yes, a mechanic can reset the OBDII code P0B09 using a diagnostic scanner after repairing the underlying problem with the auxiliary transmission fluid pump motor supply voltage circuit.
10. How long does it usually take to repair the OBDII code P0B09?
- The repair time for the P0B09 code can vary based on the specific issue, but it may take a few hours to a full day for a mechanic to diagnose, repair, and reset the code.
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