P2D24 code meaning
Turbocharger Interstage Pressure Sensor A Circuit High
Powertrain system Generic code P2Dxx codes Check engine light
What P2D24 means
P2D24 is the opposite case to P2D23: the interstage pressure signal is pinned near or above the top of its range. On a three-wire sensor this usually points to an open ground, a signal wire touching the 5 V reference or battery voltage, or an open signal line pulled up inside the controller. Ford's 2023 diesels, as a comparable pressure sensor example, set circuit high above 4.85 V. No manufacturer documents P2D24 or its threshold. Cummins places the sensor between the low- and high-pressure stages ahead of the charge air cooler. California requires out-of-range monitoring. A falsely high value can make the controller think the low-pressure stage overboosts and cut its output.
P2D24 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2D24
- Check engine light
- Power reduced, boost held back
- Interstage pressure reads high even with the engine off
Common causes of P2D24
- Most likelyOpen sensor ground or corroded ground pin
- PossibleOpen signal wire pulled up by the controller
- PossibleSignal wire shorted to 5 V reference or battery voltage
- Less likelySensor electronics failed high
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Turbo interstage pressure sensor aWiring harnessECM
What each part of P2D24 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 24 | The exact fault in that area. |
What to do next
- Note P2D24 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 P2D24
What does P2D24 mean?
P2D24 means "Turbocharger Interstage Pressure Sensor A Circuit High". P2D24 is the opposite case to P2D23: the interstage pressure signal is pinned near or above the top of its range. It is a generic code, so it means the same on every make.
Is it safe to drive with P2D24?
Drive gently and only to a workshop. With P2D24 the car can go into limp mode (reduced power) to protect itself.
Will P2D24 fail an emissions test?
Yes, it can. P2D24 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 P2D24 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2.5 hours of work. This is a job for a workshop.
Will P2D24 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.