What does it mean?
B2329 is a Body (airbags, seat belts, body electronics) fault code. It indicates: Rain Sensor Optical Path 1 Performance .
Symptoms
- The column will not extend or retract during memory recall, although the manual switch may still work.
- Easy entry and exit column movement is disabled.
- The column overtravels or stops early because the module cannot see where it is.
- Column memory positions cannot be stored.
- Seat and mirror memory recall may be interrupted when they run as one sequence.
Likely causes
- Broken conductor in the column loom at the point where it flexes with tilt and telescope movement.
- Connector at the reach motor or the column module unlatched, or a terminal pushed back after column shroud, air bag or switch work.
- Corroded terminals after a drink was spilled down the column or into the lower dash.
- Completely worn resistive track so the wiper loses contact and the feedback voltage disappears.
- Missing five volt reference or open sensor ground between the module and the potentiometer.
- Internal break inside the reach actuator assembly.
- Column control module output that supplies the reference has failed.
How to fix it
- Read the column and body module codes and note whether the tilt circuit is also affected.
- Watch the reach position value in live data while running the column slowly through its whole travel with the switch.
- A value that disappears at one point rather than everywhere separates a worn track from a permanently broken wire.
- Measure the five volt reference, signal and ground at the potentiometer connector, then repeat at the module connector.
- Check continuity of the signal wire end to end while flexing the column loom, since the wiring is stressed at every adjustment.
- Repair broken conductors with sealed crimped joints and replace corroded or spread terminals.
- Replace the reach potentiometer or actuator assembly only when the wiring and reference are proven, then relearn the column memory positions.