P2598 code meaning
Turbocharger Boost Control Position Sensor A Performance - Stuck Low
Powertrain system Generic code P25xx codes Check engine light
What P2598 means
P2598 means the boost control position of turbocharger A, normally the vane or wastegate position reported by the actuator, appears stuck toward its low end: the measured value no longer follows the command although the signal is electrically valid. Ford's 2023 diesel OBD summary runs this check with closed-loop position control active above 500 rpm and flags a gap of more than 15 % in either direction lasting 25 s, with an extra variant during cold start. GM's 2018 table for its smaller diesels reads it as vanes jammed more open than requested (640 of 800 samples, Type A). GM bulletin PI1260 blames vacuum leaks for it on the 2014 Cruze with the 2.0 L diesel, and 17-NA-301 says a P2598 found at pre-delivery on 2017-2018 Cruze, Equinox and Terrain diesels may just be cleared. P2599 is the high-side partner. Expect reduced power.
P2598 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 5 hours
- Clears after repairAfter a drive cycle
Symptoms of P2598
- Engine warning lamp on
- Lack of power under load, boost limited
- Unusual turbo noise
Common causes of P2598
- Most likelySooted or seized variable vanes that no longer follow the actuator
- PossibleVacuum leak or kinked hose on pneumatically driven actuators
- PossibleWorn or failed electric vane actuator
- Less likelyOne-off entry from unusual operation, e.g. after delivery transport
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Turbo actuator position sensor aTurbo actuator
What each part of P2598 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 5 | Area: vehicle speed, idle control and auxiliary inputs. |
| 98 | The exact fault in that area. |
What to do next
- Note P2598 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2598
What does P2598 mean?
P2598 means "Turbocharger Boost Control Position Sensor A Performance - Stuck Low". P2598 means the boost control position of turbocharger A, normally the vane or wastegate position reported by the actuator, appears stuck toward its low end: the measured value no longer follows the command although the signal is electrically valid. It is a generic code, so it means the same on every make.
Is it safe to drive with P2598?
Drive gently and only to a workshop. With P2598 the car can go into limp mode (reduced power) to protect itself.
Will P2598 fail an emissions test?
Yes, it can. P2598 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2598 to fix?
Difficulty: hard. A typical repair takes 0.5 to 5 hours of work. This is a job for a workshop.
Will P2598 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.