What Does P2587 Mean?
The turbocharger boost control position sensor 'B' signal is outside the expected range or shows implausible values. The sensor reading does not correlate with expected actuator position during operation.
Common Causes
35%
Worn or failing turbo boost control position sensor B
25%
Mechanical issue with turbo actuator causing position mismatch
20%
Intermittent wiring or connector issues
15%
Carbon buildup or sticking VGT/wastegate mechanism
5%
Vacuum leak affecting actuator operation
Diagnostic Steps
1
Step 1: Monitor sensor B live data and compare to sensor A (if equipped) during various engine loads
2
Step 2: Perform turbo actuator sweep test and verify sensor tracks movement accurately
3
Step 3: Inspect turbo actuator for proper mechanical operation and full range of motion
4
Step 4: Check for carbon buildup in VGT mechanism or sticking wastegate
5
Step 5: Verify vacuum supply (if vacuum-actuated) or electrical operation (if electronic)
Estimated Repair Cost
$250 - $1,200
Parts + labor, varies by vehicle and location
The turbocharger boost control position sensor 'B' signal is outside the expected range or shows implausible values. The sensor reading does not correlate with expected actuator position during operation.
The most common cause of P2587 (Turbocharger Boost Control Position Sensor "B" Circuit Range/Performance) is: Worn or failing turbo boost control position sensor B
Typical repair costs for P2587 range from $250 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
May cause unpredictable boost levels, overboost, or underboost conditions. Reduced power and possible limp mode activation.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2587 to identify the root cause.
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Quick Info
Category
Powertrain
System
Forced Induction System
Difficulty
Type
Generic (SAE)
Recommended Tools
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