B2316
BBodyPassenger Mirror Vertical Potentiometer Circuit Fault
What does this code mean?
Severity : LowB2316 reports a fault in the passenger mirror vertical feedback potentiometer circuit. This potentiometer tells the module the vertical position of the mirror glass, mainly for the memory seat and mirror function. This is a manufacturer-specific body code: the exact meaning depends on the manufacturer.
Symptoms
- Mirror memory function not working.
- Mirror does not return to the stored position.
- Vertical mirror adjustment sometimes stuck.
- No warning light in most cases.
Possible causes
- Worn feedback potentiometer in the mirror.
- Broken wire in the door hinge area.
- Corroded mirror connector, often from water ingress.
- Faulty mirror adjustment motor.
- Faulty door or memory module.
Diagnosis and repair
- Inspect the wiring through the door hinge and the mirror connector.
- Check in live data whether the position value changes as you adjust the mirror.
- Measure the potentiometer with a multimeter while it moves.
- Replace the mirror adjustment unit or repair the wiring.
- Clear the code and reprogram the memory position.
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Code
B2316
Category
Body
Prefix
B
Standard
OBD-II / SAE J2012