What Does B2860 Mean?
B2860 indicates that the Body Control Module (BCM) has detected a fault in the telescoping steering column position sensor circuit or the sensor itself. This sensor monitors the fore/aft position of the adjustable steering column and provides feedback to the BCM for memory seat functions and column positioning. The code sets when the BCM receives an implausible signal, no signal, or a signal that is out of range from the telescoping column position sensor.
Common Causes
45%
Faulty telescoping column position sensor (potentiometer failure or internal short/open circuit)
30%
Damaged or corroded wiring harness and connector between BCM and telescoping column sensor
15%
Mechanical binding or physical damage to telescoping column mechanism preventing proper sensor operation
10%
Failed Body Control Module (BCM) unable to properly read sensor signals
Diagnostic Steps
1
Step 1: Visually inspect the telescoping steering column connector and wiring harness for obvious damage, corrosion, loose pins, or chafing. Pay special attention to the area where the harness flexes during column adjustment.
2
Step 2: Using a multimeter, backprobe the telescoping position sensor connector and verify the sensor receives proper reference voltage (typically 5V) and ground from the BCM with ignition on.
3
Step 3: Monitor the sensor output voltage with a multimeter or scan tool live data while manually moving the steering column through its full telescoping range. The voltage should sweep smoothly between approximately 0.5V and 4.5V without jumps or dropouts.
4
Step 4: If voltage readings are erratic or out of range, disconnect the sensor and measure its internal resistance while moving the telescoping mechanism. Compare readings to manufacturer specifications (typically 1-10 kOhms variable resistance).
5
Step 5: Physically cycle the telescoping column mechanism through full range to check for binding, rough spots, or mechanical obstructions that could damage the sensor or prevent proper operation.
6
Step 6: If all sensor and wiring tests pass, perform BCM diagnostic self-tests and verify proper BCM ground connections. Replace sensor or repair wiring as identified, then clear codes and verify repair by cycling column through full range and road testing.
Estimated Repair Cost
$150 - $650
Parts + labor, varies by vehicle and location
B2860 indicates that the Body Control Module (BCM) has detected a fault in the telescoping steering column position sensor circuit or the sensor itself. This sensor monitors the fore/aft position of the adjustable steering column and provides feedback to the BCM for memory seat functions and column ...
The most common cause of B2860 (Telescoping Column Position Sensor Failure) is: Faulty telescoping column position sensor (potentiometer failure or internal short/open circuit)
Typical repair costs for B2860 range from $150 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving. This code affects convenience features like memory seat positioning and power telescoping column adjustment but does not impact steering function or vehicle safety. Manual column adjustment (if equipped) typically remains functional.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B2860 to identify the root cause.
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Quick Info
Category
Body
System
Steering Column / Body Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
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