B2919 Ford Code - Auxiliary Blower Motor Speed Input Circuit Short To Voltage
Quick Answer
Under normal operation, ground for the blower motor is provided through the circuit from the blower motor resistor (LO and MED-LO) and the blower motor speed relay 1 (MED-HI and HI). Common causes include Faulty Auxiliary Blower Motor Speed Relay 1, Auxiliary Blower Motor Speed Relay 1 harness is open or shorted, Auxiliary Blower Motor Speed Relay 1 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
- B2919 Ford indicates Auxiliary Blower Motor Speed Input Circuit Short To Voltage.
- Common causes
- Common causes include Faulty Auxiliary Blower Motor Speed Relay 1, Auxiliary Blower Motor Speed Relay 1 harness is open or shorted, Auxiliary Blower Motor Speed Relay 1 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 B2919 Ford Description
In LO, ground for the blower motor is provided through the blower motor resistor.
In MED-LO, blower motor speed relay 2 is grounded by the SJB through the circuit. Blower motor ground circuit is connected through one half of the blower motor resistor to the circuit. The circuit is connected through the blower motor speed relay 2 to the blower motor resistor ground circuit.
In MED-HI, blower motor speed relay 1 is grounded by the SJB through the circuit. Blower motor ground circuit is connected through blower motor speed relay 2 to the circuit. The circuit is connected through one half of the blower motor resistor to the blower motor resistor ground circuit.
In HI, blower motor speed relays 1 and 2 are grounded by the SJB through the circuit. Blower motor ground circuit 515 (OG/RD) is connected through the blower motor speed relay 1 to the circuit. The circuit is connected through the blower motor speed relay 2 to the blower motor resistor ground circuit.
What are the Possible Causes of the DTC B2919 Ford?
- Faulty Auxiliary Blower Motor Speed Relay 1
- Auxiliary Blower Motor Speed Relay 1 harness is open or shorted
- Auxiliary Blower Motor Speed Relay 1 circuit poor electrical connection
- Faulty Blower Motor Resistor
- Faulty Smart Junction Box (SJB)
How to Fix the DTC B2919 Ford?
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 B2919 Ford 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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Frequently Asked Questions about B2919 Ford Code
1. What does the OBDII code B2919 mean on a Ford vehicle?
Code B2919 indicates an issue in the Auxiliary Blower Motor Speed Input Circuit, specifically a short to voltage.
2. What are the common symptoms of code B2919 on a Ford?
Symptoms may include the auxiliary blower motor not functioning, erratic blower speeds, or a blown fuse related to the blower motor circuit.
3. What causes the B2919 code to appear on a Ford?
Common causes include damaged wiring, a short circuit in the blower motor circuit, a faulty auxiliary blower motor, or a malfunctioning control module.
4. How do I diagnose the B2919 code on my Ford?
Start by inspecting the wiring and connectors for damage or corrosion, check the blower motor for proper operation, and test the circuit for shorts to voltage using a multimeter.
5. Can a faulty auxiliary blower motor trigger the B2919 code?
Yes, a malfunctioning auxiliary blower motor can cause the circuit to short and trigger the B2919 code.
6. Is it safe to drive with the B2919 code active on my Ford?
While the vehicle may still be drivable, the auxiliary blower motor may not function correctly, which can affect cabin comfort and ventilation.
7. How do I fix the B2919 code on a Ford?
Repairs may include replacing damaged wiring, repairing short circuits, replacing the auxiliary blower motor, or resetting the control module.
8. Can the B2919 code reset itself?
The code will not reset itself until the underlying issue, such as a short circuit or faulty motor, is repaired and the system is cleared.
9. How much does it cost to repair the B2919 code on a Ford?
Repair costs can vary, ranging from $50 for minor wiring repairs to $300 or more if the blower motor or control module needs replacement.
10. Can a blown fuse cause the B2919 code?
Yes, a blown fuse in the blower motor circuit can indicate a short and may contribute to triggering the B2919 code.
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