B2146
Manufacturer-specific Basic entry
Seat Recline Motor Position Out of Range
Severity
Low
Typical repair cost
60 – 500 EUR
System
Body
This is a manufacturer-specific code. Its exact meaning can differ between makes; the definition below follows the most common usage.
What it means
B2146 is stored when the Seat Recline Motor Position Out of Range signal is electrically valid but does not make sense compared with other sensors or the expected operating range. The circuit is usually fine; the component or what it measures is out of specification.
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Symptoms
- The affected function (lighting, locking, windows, seats, climate or restraint) does not work or works intermittently
- Warning light or message on the instrument cluster
- Possible battery drain if a module stays awake
Common causes
- Seat Recline Motor Position Out of Range worn, contaminated or out of calibration
- Mechanical problem in the system the sensor measures
- Air, vacuum or exhaust leak influencing the reading
- Wrong or low-quality replacement part
- Wiring resistance causing a small voltage offset
How to diagnose
- Compare the live Seat Recline Motor Position Out of Range reading with a known-good value or a second sensor at idle and at 2500 rpm
- Check for air, vacuum or exhaust leaks that could skew the reading
- Inspect the component for contamination and clean it if the design allows
- Verify the part number is correct for the engine
- Replace the Seat Recline Motor Position Out of Range if the reading remains out of specification
Frequently asked questions
Can I keep driving with B2146?
Yes. The fault does not affect safety or driveability, but it will keep the warning light on and may fail an inspection.
Will clearing B2146 fix it?
No. Clearing only erases the stored code; it returns as soon as the monitor runs again unless the cause is repaired.