DTC B1248: B1248 — Passenger's Seatback Autoglide Rearward Switch Circuit Short to Ground: Causes, Symptoms & Fix

The B1248 OBD2 fault code relates to the Passenger's Seatback Autoglide Rearward Switch circuit. This switch controls seatback movement. When the circuit short to ground, the seat adjustment may not work. At AIscanAuto, we help drivers quickly identify OBD2 trouble codes, understand their root causes, and find the right fix.

B1248 — Passenger's Seatback Autoglide Rearward Switch Circuit Short to Ground: Causes, Symptoms & Fix

The B1248 OBD2 fault code relates to the Passenger's Seatback Autoglide Rearward Switch circuit. This switch controls seatback movement. When the circuit short to ground, the seat adjustment may not work.

At AIscanAuto, we help drivers quickly identify OBD2 trouble codes, understand their root causes, and find the right fix.

Symptoms

  • Seatback not moving
  • Switch not responding
  • Intermittent operation

Common Causes

  • Failed switch — worn contacts
  • an electrical short to ground is pulling the signal to 0V — creates a direct path to ground, causing the circuit to read 0V
  • Wiring issues — damaged seat harness
  • Motor failure

Step-by-Step Diagnosis

  1. Scan with OBD2 tool — Confirm B1248.
  2. Test switch — Check operation.
  3. Inspect wiring — Check under seat.
  4. Test motor — Apply direct voltage.

Repair & Solutions

  • Replace switch if faulty.
  • Repair wiring.
  • Replace motor if needed.

Related Codes

  • B1245 — Wiper Rear Motor Run Relay Circuit Short to Battery
  • B1246 — Dim Panel Potentiometer Switch Circuit Failure
  • B1247 — Panel Dim Switch Circuit Open

External References

- OBD2Pros — Complete DTC Reference

About This Guide

This diagnostic article is an original guide created by AIscanAuto for educational and troubleshooting purposes. The technical information about OBD2 DTC codes is based on publicly available automotive diagnostic standards and industry best practices. External links provided in the "External References" section are for additional reading and context only — they do not imply endorsement or ownership of third-party content. All repair procedures should be performed by qualified technicians.