Code
B2167
Other
B — Body
Seat Horizontal Motor Memory Position Out of Range
AI status
Completed
Completed
100%
Causes
- Faulty seat position sensor (potentiometer/encoder) or out-of-spec signal
- Defective seat horizontal motor or excessive motor current draw
- Wiring damage, poor connector contact, or corrosion in seat harness
- Obstruction or mechanical binding in the seat track or sliders
- Faulty seat control module or memory module software failure
- Blown fuse or intermittent power/ground to the seat module
Symptoms
- Seat will not move to stored memory position or memory recall fails
- Seat moves inconsistently, stops prematurely, or moves erratically
- One or more seat preset buttons do not work
- Diagnostic trouble code B2167 present and may reappear after clearing
- Possible audible motor noise with minimal or no seat travel
What to check
- Retrieve freeze frame and clear code, then attempt to reproduce and recheck
- Verify battery/charging system voltage (should be ~11–14 V during test)
- Inspect fuses and relays for seat/memory system
- Visually inspect seat harness, connectors, and ground points for damage or corrosion
- Check for mechanical obstructions and ensure seat slides freely by hand
- Use a scan tool to observe seat position sensor values while operating seat
Signal parameters
- Reference supply to position sensor: typically 5 V (vehicle dependent)
- Position sensor output: typically varies between ~0.5–4.5 V across travel
- Position sensor resistance (potentiometer style): vehicle-specific, often 0–5 kΩ range
- Motor supply voltage when commanded: ~11–14 V (key on, engine off or running)
- Motor run current: typically under 15 A; sustained high current indicates binding/short
Diagnostic algorithm
- Connect a scan tool, read DTCs and live data for the seat horizontal position sensor and memory status.
- Verify battery voltage is adequate. Clear the code and attempt to reproduce the fault while monitoring live data.
- Check fuses and relays for the seat/memory circuit. Inspect connector pins for corrosion or looseness, especially at the seat base and floor harness.
- Manually move the seat (with ignition off or per manufacturer procedure) to check for mechanical binding. Lubricate or free any seized parts.
- With the seat commanded to move, measure motor supply voltage at the motor connector. If voltage is present but seat doesn’t move, suspect motor/gear failure or mechanical jam.
- Probe the position sensor signal with a multimeter or oscilloscope while moving the seat. Verify a smooth, continuous change in voltage or resistance without dropouts or jumps.
- Check wiring continuity and resistance between the sensor and seat control module; repair any chafed wires or broken strands (common at harness flex points).
- Measure motor current during operation. High current indicates binding or internal motor fault; no current with command indicates wiring or module output fault.
- If sensor/motor/harness checks are good but fault persists, inspect/replace seat control module or update module software/perform relearn procedure per manufacturer service information.
- After repairs, clear codes and perform any required seat calibration/memory relearn. Verify proper operation through several cycle tests.
Likely causes
- Position sensor output voltage out of expected 0.5–4.5 V range due to worn potentiometer
- Open/short in harness between sensor and seat control module (broken wire at seat hinge)
- Motor gear or track binding causing position feedback to be inconsistent
- Poor ground at seat frame causing erratic sensor readings
- Seat control module failing to recognize sensor values due to software or internal fault
Fault status
Status
Seat horizontal motor memory position out of range — position feedback or motor response is outside expected limits; memory recall may not function.
Repair difficulty: Medium
Diagnostic time: 1.0-2.5 hours
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