P2293: Fuel pressure regulator 2 not performing as expected
Fuel pressure regulator 2 performance
Severity: Inspect soon
PartsAvatar lists hesitation and says the code needs prompt diagnosis; fuel delivery faults can cause stalling.
It gets more serious if:
- Stop: Stop driving if the engine stalls or loses power at speed.
P2293 in short
P2293 means the computer saw the second fuel pressure regulator performing outside its limits. Causes include a weak fuel pump, clogged filter, failing regulator or pressure sensor and wiring. On one Audi, an aftermarket tune asking for too much fuel pressure set it. Get it diagnosed soon.
The computer compares what the regulator should deliver to what it measures. P2293 means regulator 2 is off.
PartsAvatar lists the fuel pump, lines, filter, regulator, pressure sensor and wiring.
One owner on an Audi A4 found an aftermarket tune was asking for more pressure than the system could deliver around 2000 rpm; changing the tune cleared the code. That is a single report.
Most likely causes
These are general causes for this code across vehicles. None is specific to one make or model.
Cause 1: Weak fuel pump or clogged filter
Common general cause- Why it ranks here
- PartsAvatar lists pump output and a clogged filter first.
- What would change this
- Rises if measured pressure is low under load. Falls if pressure is steady.
Cause 2: Regulator or pressure sensor and wiring
Common general cause- Why it ranks here
- PartsAvatar lists the regulator, sensor and wiring.
- What would change this
- Rises if the sensor reading disagrees with a gauge. Falls if they agree.
Cause 3: Aftermarket tune requesting excess pressure
Possible — needs testing- Why it ranks here
- A single forum report; it ranks low.
- What would change this
- Rises if the vehicle is tuned and the code appeared after. Falls on a stock vehicle.
What to test first
Start at step 1. Each result tells you what it means and where to go next.
Step 1: Read all codes and freeze-frame data and note whether the vehicle has an aftermarket tune.
IfAn aftermarket tune is fitted
It meansAsk the tuner to review the fuel pressure request.
IfStock vehicle
It meansHave the fuel system checked.
Step 2: Have a shop check fuel pressure against a gauge and inspect filter, regulator, connectors and wiring.
Warning:Fuel systems are pressurised and flammable. Let a shop do it.
IfPressure is low or filter restricted
It meansPump or filter.
IfPressure is fine but sensor reading differs
It meansRegulator or sensor.
Symptoms
- Check engine light
- Reduced fuel economy
- Hesitation on acceleration Gets more serious: stop and have it checked.
How to fix
On your vehicle
ChevroletYour car
2024 · Silverado 1500
Supported by vehicle dataChevrolet bulletin PIP5988 names P2293. Preliminary information telling technicians not to replace the injection pump for P0089 and P2293 but to replace the fuel rail instead. Also listed for the GMC Sierra 1500. Whether it is still current is not verified.
PIP5988Status unverified
Replace fuel rail, not injection pump, for P0089 and P2293 (Silverado 1500)
2024silverado-1500 · issued · NHTSA 11007378
Preliminary information telling technicians not to replace the injection pump for P0089 and P2293 but to replace the fuel rail instead. Also listed for the GMC Sierra 1500.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
Related codes
No curated relationships for P2293 yet.
P2293 questions
Can a tune cause P2293?
On one Audi A4 it did: a tune asked for more fuel pressure than the system could deliver. That is one owner report.
Sources and review
- P2293 OBD error code summary
- P2293 Fuel Pressure Regulator 2 Performance (owner forum thread)
- Chevrolet PIP5988: Replace fuel rail, not injection pump, for P0089 and P2293 (Silverado 1500)
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error