B00B6

Code

Generic B — Body

Driver Seat Recline Position Restraints Sensor

Brand: Generic

Type: B — Body

Views: UK: 30 EN: 58 RU: 23

AI status

Completed

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Page language: EN

Causes

Open, short or intermittent wiring/connectors between sensor and restraint control module
Corroded or loose connector at sensor or module
Failed recline position sensor (potentiometer, Hall sensor or switch)
Mechanical binding or damage to seat recline mechanism preventing normal sensor travel
Faulty restraint control module or internal electronics
Water/moisture intrusion or foreign debris in sensor or connector

Symptoms

Restraints/airbag warning lamp illuminated
Stored DTC B00B6 (and possibly related restraint codes)
Seat memory or occupant classification warnings or disabled features
Seat recline position not stored or incorrect seat memory recall
Intermittent or locked recline movement or unexpected seat behavior
Possible disablement or altered deployment logic of restraint system

What to check

Read freeze frame and all related codes with a compatible scan tool; record live data for seat recline position
Perform a visual inspection of the driver seat wiring, connectors and sensor for damage, corrosion or foreign debris
Wiggle test wiring while watching live data to reproduce the fault (do this cautiously with ignition on, vehicle stationary)
Inspect seat recline mechanism for mechanical binding or damage through full travel
Check connector pins for bent, pushed‑out, corroded or loose terminals
Verify proper power (reference voltage) and ground at sensor harness with meter

Signal parameters

Sensor type: typically a variable resistor (potentiometer) or Hall effect position sensor used by restraint module
Reference circuit: commonly a 5 V reference supplied from the restraint/seat control module and a ground
Signal voltage: typically varies across full travel (expected nominal range ~0.5 V to ~4.5 V) — signal should move smoothly with seat recline
Resistance: for potentiometer sensors expect a change in resistance across travel (consult vehicle spec)
Failure patterns: open circuit → no signal/OL, short to ground → near 0 V, short to Vref → near reference voltage, intermittent → fluctuating signal
Communication: some systems report seat position over CAN/LIN from a seat module; check bus health if applicable

Diagnostic algorithm

Connect a diagnostic scan tool. Retrieve DTCs, freeze frame and live data for the seat recline/position sensor and restraint module. Note any related codes (modules, communication faults).
Observe live seat recline sensor value while commanding or moving the seat through full travel. Look for smooth, continuous change and no abrupt dropouts.
Visual inspection: remove trim as required and inspect wiring harness, connectors and the sensor for damage, pin corrosion or water intrusion.
Wiggle test the harness and connectors while monitoring live data to try and reproduce the fault (do not pinch wires).
With ignition ON (follow vehicle safety procedures), verify reference voltage and ground at the sensor connector using a multimeter. Compare readings to expected values in service information.
Probe the sensor signal while moving the seat. Confirm signal voltage changes smoothly and remains within expected range. If open/short suspected, measure resistance of potentiometer (with connector disconnected) across terminals and compare to spec.
Check for continuity and shorts to ground or battery voltage between sensor signal, reference and ground circuits back to the restraint module.
If wiring and connectors are good but signal is out of range or erratic, replace the seat recline position sensor. If sensor replacement does not clear fault, consider seat control/resraint module diagnosis or replacement.
After repair or replacement, perform any required sensor calibration/learning procedure per manufacturer instructions, clear DTCs and verify with a test drive or repeated seat operation.
If intermittent and not reproducible by inspection, consider harness repair (protective conduit, re‑routing) and recheck; if CAN/LIN messages are used, check bus integrity and module communication.

Likely causes

Damaged wiring harness under seat — pinched, chafed or broken conductors
Connector terminal corrosion or poor mating at sensor or module
Sensor wear or internal short/open (common with potentiometer style sensors)
Seat track/hinge binding causing sensor to stop in an abnormal position
Loss of reference voltage or ground from the restraint control module
Software/firmware issue or missing sensor calibration in module

Fault status

⚠️ Status

Restraint system detected invalid/absent driver seat recline position sensor signal. May affect occupant classification and airbag/pretensioner deployment logic.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5 - 2.5 hours