What Does P0915 Mean?
The TCM has determined that the gear shift position sensor signal is outside the expected range or the sensor's performance is inconsistent. The sensor is providing a signal but the values don't correspond properly to known gear positions, indicating sensor wear, calibration drift, or mechanical misalignment in the shift mechanism.
Safety Warning
Poor position sensor performance can cause gear engagement errors, harsh shifts, or the TCM to reject shift commands. Do not drive until diagnosed and repaired.
Common Causes
35%
Worn gear shift position sensor producing erratic or out-of-range readings
25%
Shift mechanism linkage wear or misalignment affecting sensor reading
25%
Intermittent wiring contact causing sporadic signal deviation
15%
TCM requires recalibration or software update for sensor parameters
Diagnostic Steps
1
Step 1: Use a scan tool to graph the gear shift position sensor output during a commanded shift sequence — look for dead spots, inconsistent transitions, or values outside expected ranges for each gear.
2
Step 2: Verify the sensor mechanical alignment — check for proper sensor seating, correct mounting torque, and no foreign debris between the sensor and its target.
3
Step 3: Inspect the shift mechanism for excessive play or worn components — disconnect the actuator and manually move the shift rails to feel for binding, notchy movement, or excessive free play.
4
Step 4: Wiggle-test the sensor connector and wiring while monitoring signal — signal instability during physical manipulation indicates a wiring issue.
5
Step 5: Check for TSBs related to gear shift position sensor recalibration procedures or updated sensor part numbers for the specific vehicle.
Estimated Repair Cost
$150 - $700
Parts + labor, varies by vehicle and location
The TCM has determined that the gear shift position sensor signal is outside the expected range or the sensor's performance is inconsistent. The sensor is providing a signal but the values don't correspond properly to known gear positions, indicating sensor wear, calibration drift, or mechanical mis...
The most common cause of P0915 (Gear Shift Position Circuit Range/Performance) is: Worn gear shift position sensor producing erratic or out-of-range readings
Typical repair costs for P0915 range from $150 to $700, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Poor position sensor performance can cause gear engagement errors, harsh shifts, or the TCM to reject shift commands. Do not drive until diagnosed and repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0915 to identify the root cause.
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Quick Info
Category
Powertrain
System
Automated Manual Transmission (Shift Control)
Difficulty
Type
Generic (SAE)
Recommended Tools
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