Faulty driver seat tilt position sensor (internal wear or contamination); Damaged or chafed wiring harness under the seat, often from seat movement or cargo; Corroded or loose electrical connector at the sensor or seat module; Failed seat control module or body control module (BCM) not processing the sensor signal; Mechanical binding or obstruction in the seat tilt mechanism causing implausible sensor readings; Water intrusion or spills damaging the sensor or connector; Aftermarket seat covers or accessories interfering with sensor linkage

DTC codes / B03xx · Airbags, seats, doors, lights and comfort systems / B0322

B0322Driver Seat Tilt Position Sensor

Q: What does code B0322 mean?

Driver Seat Tilt Position Sensor. B0322 indicates that the body control module (BCM) or seat control module has detected an out-of-range or implausible signal from the driver seat tilt position sensor, which monitors the angle of the seat cushion or backrest. The computer compares the sensor voltage against expected values for the commanded tilt position and sets this code when the signal falls outside the valid range or fails a rationality check.

B0322 indicates that the body control module (BCM) or seat control module has detected an out-of-range or implausible signal from the driver seat tilt position sensor, which monitors the angle of the seat cushion or backrest. The computer compares the sensor voltage against expected values for the commanded tilt position and sets this code when the signal falls outside the valid range or fails a rationality check.

SystemBody

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaAirbags, seats, doors, lights and comfort systems

Symptoms you may notice

The driver seat tilt function may stop working or move only in one direction
The seat may default to a fixed position and ignore tilt commands
A seat memory system may fail to recall saved tilt positions
The power seat may exhibit jerky or intermittent movement when tilting
Often no symptoms besides the warning light, especially if the tilt motor still operates
A chime or message may appear if the vehicle monitors seat position for safety systems

Common causes, most likely first

Faulty driver seat tilt position sensor (internal wear or contamination)
Damaged or chafed wiring harness under the seat, often from seat movement or cargo
Corroded or loose electrical connector at the sensor or seat module
Failed seat control module or body control module (BCM) not processing the sensor signal
Mechanical binding or obstruction in the seat tilt mechanism causing implausible sensor readings
Water intrusion or spills damaging the sensor or connector
Aftermarket seat covers or accessories interfering with sensor linkage

How to diagnose and fix it

Inspect the seat tilt mechanism for physical obstructions, binding, or damage and verify free movement
Check the sensor connector and wiring under the seat for corrosion, looseness, or chafing; clean and reseat as needed
Measure the sensor reference voltage and ground at the connector with a digital multimeter (DMM) to confirm power and ground integrity
Backprobe the sensor signal wire and observe voltage while moving the seat through its tilt range to check for smooth variation
Compare sensor voltage readings against manufacturer specifications for the commanded tilt positions
If the sensor signal is erratic or out of range, replace the driver seat tilt position sensor and clear the code
If the sensor and wiring test good, diagnose the seat control module or BCM for internal faults or software issues

Before you replace the tilt sensor

A common oversight is a pinched or chafed wire under the seat that only loses contact when the seat is moved, so always wiggle-test the harness while watching live sensor data.
The code can be set by a mechanical problem such as a broken sensor linkage or a seat track obstruction, not just an electrical fault, so inspect the tilt mechanism before condemning the sensor.
On vehicles with seat memory, a failed tilt sensor can cause the memory system to store incorrect positions, leading to complaints that the seat 'forgets' settings even when the motor works.
Aftermarket seat covers or heavy objects left on the seat can interfere with sensor linkage or calibration, causing intermittent codes that disappear after the obstruction is removed.
A weak or failing seat control module may set this code without any sensor fault, so always verify power and ground at the module before replacing the sensor.

Can I keep driving with B0322?

The vehicle remains safe to drive because the driver seat tilt position sensor does not affect engine, braking, or steering operation, but you should avoid using the power tilt function until the fault is repaired to prevent further damage or unexpected seat movement.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.