B1068

Code

Generic B — Body

Driver's Seat Position Sensor Circuit Fault

Brand: Generic

Type: B — Body

Views: UK: 20 EN: 25 RU: 19

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Open, short to voltage, or short to ground in the seat position sensor wiring
Corroded, loose, or damaged connector at the seat position sensor
Failed seat position sensor (potentiometer or encoder)
Faulty seat track harness (pinched/chafed by seat movement)
Related module (BCM/SEAT control) internal fault or software issue
Water intrusion or contamination at the connector or sensor

Symptoms

Seat memory not functioning or will not return to stored position
Seat position displayed incorrectly or not at all (if vehicle displays position)
DTC B1068 stored and may illuminate a generic warning/message on the dash
Intermittent seat position signal — erratic seat behavior or loss of memory
Possible related features disabled (seat-linked steering wheel memory, safety interlocks) depending on vehicle

What to check

Use a scan tool to read B1068, any related codes, and freeze-frame data; clear and attempt to reproduce
Visually inspect the seat position sensor connector and wiring along the seat track for damage, corrosion, or loose pins
With ignition ON, backprobe connector: verify reference (typically ~5 V) and ground presence
Move the seat through full travel while monitoring the sensor signal for smooth, continuous change (no dropouts or jumps)
Wiggle test wiring through full seat travel to check for intermittent faults
Check continuity between the sensor connector and the control module for opens/shorts

Signal parameters

Reference voltage: approx. 5 V (key ON) — should be stable
Signal output: variable 0.0–5.0 V (varies smoothly with seat travel) or digital encoder pulses depending on design
Sensor resistance (for potentiometer types): changes smoothly across travel; no open circuit
Circuit current: typically very low (mA range) — large current may indicate short
No sudden jumps or dropouts in voltage while moving the seat

Diagnostic algorithm

Connect a full-function scan tool, read and record B1068 and any related codes; note freeze-frame and live data.
Attempt to reproduce the fault by operating the seat through full travel while monitoring live sensor data.
Visually inspect the sensor, connector, and wiring harness along the seat track for damage, corrosion, or pinched wires.
With ignition ON, backprobe the sensor connector: verify reference voltage (~5 V), ground continuity, and that the signal output changes smoothly with seat movement.
Wiggle the harness and operate the seat to identify intermittent open or short conditions; check for continuity between sensor connector and module connector.
If wiring and connectors are good, disconnect sensor and measure resistance (potentiometer) or check encoder output per service data. Replace sensor if out of spec or open.
Repair or replace damaged wiring/connectors; secure harness away from pinch points on the seat track.
After repairs, clear codes and verify the fault does not return and that seat memory/features operate correctly.
If the fault persists after sensor and wiring checks/replacement, consider module/ECU diagnostics or software update per manufacturer procedures.

Likely causes

Loose/corroded connector at the seat position sensor
Broken or chafed wiring in the seat track (most common with seat movement)
Failed sensor element (wear or internal failure)

Fault status

⚠️ Status

B1068 — Driver seat position sensor circuit fault. The control module detected an invalid or absent position signal or a wiring/connector fault. Failure may be intermittent or permanent depending on wiring or sensor condition.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours