What Does P2589 Mean?
The turbocharger boost control position sensor 'B' circuit voltage is above the maximum acceptable threshold. This typically indicates an open circuit, short to voltage, or sensor internal failure.
Common Causes
35%
Open circuit in sensor B wiring or connector
30%
Failed turbo boost control position sensor B (internal open)
15%
Shorted sensor signal wire to voltage source
12%
Poor ground connection at sensor or PCM
8%
Damaged connector pins or terminal corrosion
Diagnostic Steps
1
Step 1: Measure sensor B voltage at sensor connector (should show 0V or reference voltage depending on type)
2
Step 2: Check for open circuit by testing continuity from sensor connector to PCM
3
Step 3: Inspect connector terminals for bent pins, corrosion, or poor contact
4
Step 4: Verify ground circuit integrity and check for voltage drop
5
Step 5: Test sensor operation with known-good sensor or measure resistance values per specifications
Estimated Repair Cost
$150 - $700
Parts + labor, varies by vehicle and location
The turbocharger boost control position sensor 'B' circuit voltage is above the maximum acceptable threshold. This typically indicates an open circuit, short to voltage, or sensor internal failure.
The most common cause of P2589 (Turbocharger Boost Control Position Sensor "B" Circuit High) is: Open circuit in sensor B wiring or connector
Typical repair costs for P2589 range from $150 to $700, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Engine will likely operate in limp mode with limited boost and performance. Safe for emergency use but repair should not be delayed.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2589 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Forced Induction System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
