Engine-Codes - Generic - B12AE

B12AE Code - Passenger Heated Seat Relay Drive Circuit Open Or Shorted to Ground

- Code Popularity: 552 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code B12AE?

  • Faulty Heater Seat Relay
  • Faulty Heater Mat
  • Heater Mat harness is open or shorted
  • Heater Mat circuit poor electrical connection
  • Faulty Heating, Ventilation, and Air-Conditioning (HVAC) Module

|How to Fix the B12AE Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|What is the Cost to Diagnose the Code B12AE?

Labor: 1.0

The cost to diagnose the B12AE code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

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|What are Code B12AE Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the B12AE Code Mean?

The Heating, Ventilation, and Air-Conditioning (HVAC) Module contains the passenger heated seat control button and indicator. The heated seat system functions independently from the climate control system. A heated seat relay is located underneath the passenger seat cushion frame. There are 2 voltage supplies to the heated seat relay. Voltage is supplied from the Smart Junction Box (SJB) heated seat relay enable circuit to the passenger heated seat relay coil when the engine is running. The ground is supplied to the opposite side of the passenger relay coil by the HVAC module from the passenger heated seat relay drive circuit when the passenger heated seat switch button is pressed to energize the relay. This closes the relay contacts to supply battery voltage from the SJB circuit to the passenger heater mat circuit. The passenger heater mats are directly connected to ground circuit completing the electrical circuit to heat the seat.

Passenger Heated Seat Relay Drive Circuit Open Or Shorted to Ground

|Need more Information on the B12AE Code?

Need more information on how to fix the B12AE code? Get Access to Factory Service Manuals

|Code B12AE Information for Specific Makes

  • B12AE Ford Passenger Heated Seat Relay Drive Circuit Open Or Shorted to Ground
  • B12AE Lincoln Passenger Heated Seat Relay Drive Circuit Open Or Shorted to Ground
  • B12AE Mercury Passenger Heated Seat Relay Drive Circuit Open Or Shorted to Ground

|Need Help with the B12AE Code?

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