P0090 OBD-II Trouble Code: Fuel Pressure Regulator 1 Control Circuit

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0090 code

P0090 is a diagnostic trouble code (DTC) for "Fuel Pressure Regulator 1 Control Circuit". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $114.99 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.0 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford $114.99 $20.0
Toyota $114.99 $20.0
BMW $124.99 $20.0
SCHEDULE P0090 DIAGNOSTIC Get a fair and transparent estimate upfront

P0090 code definition

A P0090 diagnostic trouble code is referencing an issue with the fuel pressure regulator circuit.

This code is similar to P0089, P0091, and P0092.

What the P0090 code means

P0090 is an OBD-II code telling us there is a fault found within the fuel pressure regulator control circuit. This DTC is triggered when the ECM finds out-of-range performance from the control circuit. Out of range performance causes a Check Engine Light and a failsafe mode. Failsafe mode will remain in effect until normal sensor operation is detected or the issue is fixed.

What causes the P0090 code?

The fuel pressure regulator code may have some common causes:

  • Open or short in wiring harness
  • Fuel pressure regulator that has failed
  • Engine control module that is faulty
  • Poor electrical connection in the fuel pressure regulator control circuit

What are the symptoms of the P0090 code?

Common symptoms are:

  • Poor running vehicle
  • Failsafe mode set
  • Check Engine Light illuminated on the dashboard
  • Fuel economy that is lower than normal

How does a mechanic diagnose the P0090 code?

The mechanic will begin by checking for any diagnostic trouble codes (DTC’s). DTC’s will have freeze frame data associated with each code that this tells us important information for the test drive.

Next, the code will be cleared and a road test is performed. The road test should be under similar conditions to the freeze frame data.

A visual inspection will be performed to look for any damaged or broken wiring, sources of poor connection, and proper operation of the fuel pressure sensor.

A scan tool will be used to monitor fuel pressure control system operation. If the fuel pressure regulator control solenoid operates properly, then a manufacturer specific ECM test must be performed.

Common mistakes when diagnosing the P0090 code

Mistakes are commonly made when steps are not followed in order or are skipped altogether. Though the fuel pressure regulator is the typical cause, it must be tested before it is condemned and replaced. This will prevent repairs from being performed that do not address the actual fault.

How serious is the P0090 code?

Most people may only notice the Check Engine Light and no other adverse symptoms. In cases where drivability concerns are present, the vehicle should be checked immediately by a qualified mechanic.

What repairs can fix the P0090 code?

Typical repairs for P0090 are:

  • Repair of an open or short in the wiring harness
  • ECU replacement if it fails test procedures
  • Replacement of the fuel pressure regulator
  • Fixing poor electrical connections

Additional comments for consideration regarding the P0090 code

Professional scan tools are standard equipment for qualified mechanics. These scan tools will be required to view live sensor data, changes over time, readings from the ECU, and fuel pressure. In contrast, standard scan tools will only show what codes are present and will not be able to provide as extensive data.

Need help with a P0090 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

Check Engine Light
P0090
trouble codes

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P0090 code.

SCHEDULE P0090 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating

(7400)

Rating Summary
6879
249
58
41
173
6879
249
58
41
173
 at YourMechanic

David

13 years of experience
393 reviews
David
13 years of experience
Chevrolet Malibu L4-2.4L - Check Engine Light is on Inspection - Marietta, Georgia
He explained everything to me in detail on what I needed to know about my car. Definitely recommend him for getting the job done.
 at YourMechanic

Raymond

37 years of experience
402 reviews
Raymond
37 years of experience
Toyota Camry L4-2.2L - Check Engine Light is on - Las Vegas, Nevada
Raymond did a great job however I was charged for two hours labor and he was only here less than 45 minutes. should I expect this on future appointments with your mechanic ?
 at YourMechanic

Shane

17 years of experience
217 reviews
Shane
17 years of experience
Volkswagen EuroVan V6-2.8L - Check Engine Light is on Inspection - Austin, Texas
Arrived on time. Explained the issues he found and how he will fix it. I have parts on order and will schedule an appointment to have Shane install the parts when they arrive.
 at YourMechanic

Kanstantsin

19 years of experience
51 reviews
Kanstantsin
19 years of experience
Ford F-150 V8-4.6L - Check Engine Light is on Inspection - Littleton, Colorado
Kanstantsin arrived early. Was very courteous and professional. Will highly recommend to anyone. Thank you Kanstantsin.


Related questions

My car is showing trouble code P0090
Hi there - I would check the fuel pressure with a gauge to see what the pressure on the fuel rail actually is. If pressure is low, the problem may be with a clogged fuel filter, failing fuel pump relay...
I had a trouble code P0090 and now I have P2177
This may not be very hard to solve. Code P2177 (https://www.yourmechanic.com/article/p2177-obd-ii-trouble-code-system-too-lean-off-idle-bank-1-by-spencer-clayton) means your engine is running too lean. The most common cause of this is an air leak in the intake system. Since you've just been working under the hood,...

More related articles

P2670 OBD-II Trouble Code: Actuator Supply Voltage B Circuit Low
P2670 P2670 code definition A P2670 trouble code indicates the detection of a problem by the PCM or a supporting control module in the actuator supply voltage B circuit. Some of the possible modules that could detect this fault include...
P0789 OBD-II Trouble Code: Shift/Timing Solenoid Intermittent
P0789 code means there is an issue with the gear ratio within the vehicle often due too a faulty shift solenoid or transmission blockages.
P0563 OBD-II Trouble Code: System Voltage High
P0563 code means a voltage reading is out of the normal range due to a faulty alternator or starter, battery, voltage regulator, or wiring issues.

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com