OBD-II code · Powertrain (generic, extended)
P2593 Turbocharger Speed Sensor B Circuit
General electrical fault on the second turbocharger speed sensor B — used on twin-turbo, sequential or two-stage installations to read the second compressor shaft speed. Same role as sensor A on the second turbo.
Is it safe to drive with P2593?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen or shorted wiring
Symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.6–2.5 h
- Emissions test
- Likely to fail
- Parts involved
- Turbo Speed Sensor B, Sensor Wiring
Related codes
- P2590Turbocharger Boost Control Position Sensor B Circuit Intermittent/Erratic
- P2591Cruise Control Front Distance Range Sensor Left
- P2592Cruise Control Front Distance Range Sensor Right
- P2594Turbocharger Speed Sensor B Circuit Range/Performance
- P2595Turbocharger Speed Sensor B Circuit Low
- P2596Turbocharger Speed Sensor B Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.