P0551 OBD-II Trouble Code: Power Steering Pressure Sensor Circuit Range/Performance

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P0551 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0551 code

P0551 is a diagnostic trouble code (DTC) for "Power Steering Pressure Sensor Circuit Range/Performance". 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 $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 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$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
SCHEDULE P0551 DIAGNOSTIC Get a fair and transparent estimate upfront

Check Engine Light

P0551 code definition

The definition of the P0551 trouble code is that the power steering pressure sensor circuit range/performance is compromised or malfunctioning.

What the P0551 code means

When this code set it means that the powertrain control module did not receive the correct voltage input signal from the power steering pressure sensor. Most of the time, this issue will occur at lower vehicle speeds. Some types of vehicles will need to have multiple failure cycles for this to cause the Check Engine light to come on. However, after the first failure, the trouble code should be stored in the onboard computer.

What causes the P0551 code?

Some of the most common causes of the P0551 code are as follows:

  • Dirty power steering fluid
  • Malfunction of the power steering system
  • Problems with the wiring or connector for the power steering pressure sensor
  • Power steering pressure sensor could be defective

What are the symptoms of the P0551 code?

Here are some of the most common symptoms that drivers noticed with the P0551 trouble code:

  • Vehicle performance problems
  • Decrease in fuel economy
  • Drivers may notice a power steering fluid leak
  • Check Engine light may come on
  • A vehicle may stall when driving at slow speeds and turning the steering wheel
  • In rare instances, the driver may not notice any issues at all with the vehicle

How does a mechanic diagnose the P0551 code?

When they are diagnosing the P0551 code, the mechanic will record the information stored in the onboard computer with their scanner. They will then reset the code and test the vehicle to see if the code returns. If it is not a false alarm, they will then try to pinpoint the actual problem with the vehicle and make the necessary repairs to remove the code.

Common mistakes when diagnosing the P0551 code

Because of the possibility of the engine stalling when driving and turning at low speeds, many will mistakenly blame the idle air control system for the issue rather than the power steering pressure sensor circuit and issues with the power steering system.

It is always a good idea for mechanics to fully diagnose and explore the potential problems with the vehicle so they can find the exact cause and repair it properly. One of the first things the mechanic will likely want to consider is the power steering fluid. They want to make sure there is enough, and that it is clean.

How serious is the P0551 code?

The P0551 code can be quite problematic. In many cases, the vehicle is going to suffer from some serious performance issues. In addition to possibly having a power steering fluid leak, it is also possible that the fuel economy for the vehicle is not quite as robust as it used to be. One of the most troubling aspects of the P0551 code is that those vehicles that have the code stored often have trouble when it comes to stalling out during low-speed vehicle maneuvers. This has the potential to be very dangerous, therefore getting the code fixed and the vehicle repaired as quickly as possible is essential.

What repairs can fix the P0551 code?

The following are some of potential repairs that can be used to fix the P0551 code:

  • Scanning the vehicle, resetting the code, and testing to see if it comes back
  • Changing the power steering fluid
  • Replacing corroded wires or connectors
  • Repair or replace the power steering system
  • Repair or replace the power steering pressure sensor circuit

Additional comments for consideration regarding the P0551 code

Since these issues presented by the P0551 code can be dangerous, it is important to have them taken care of immediately. Get the problem checked out by a certified mechanic as quickly as you can to reduce the risk of further problems.

Need help with a P0551 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.

trouble codes
Check Engine Light
P0551

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P0551 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.5/5

Number of Reviews

3,788

Rating Summary
3,460
163
43
24
98
3,460
163
43
24
98

Chris

15 years of experience
113 reviews
Chris
15 years of experience
Chris was very professional. He was able to diagnose the problem.
2012 MAZDA 5 - CHECK ENGINE LIGHT IS ON - FORT LAUDERDALE, FLORIDA

Keith

15 years of experience
168 reviews
Keith
15 years of experience
Keith is the only mechanic that I let near my car.
2004 FORD ESCAPE - CHECK ENGINE LIGHT IS ON - DAVENPORT, FLORIDA

Peter

40 years of experience
1059 reviews
Peter
40 years of experience
Peter was like a car doctor and a really good one. As long as Peter can fix it I will never go to a dealer again. He was everything you could ask for. I am VERY pleased.
1997 MERCEDES-BENZ S500 - CHECK ENGINE LIGHT IS ON - ANTHEM, ARIZONA

Richard

18 years of experience
451 reviews
Richard
18 years of experience
Very knowledgeable and friendly!
2008 BMW 528I - CHECK ENGINE LIGHT IS ON - ATLANTA, GEORGIA

More related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2422 OBD-II Trouble Code: Evaporative Emissions Control System (EVAP) Vent Valve Stuck Closed
Diagnostic Trouble Code (DTC): P2422 P2422 code definition Evaporative Emissions Control System (EVAP)...
P0291OBD-II Trouble Code: Cylinder 11 Injector Circuit Low
P0291 code definition When your vehicle’s PCM registers the P0291 code, it means that a voltage reading came from the fuel injector circuit – for cylinder number 11’s fuel injector –...

Related questions

Q: what causes a P0174 bank2 combustion too lean

You will need to have the system inspected thoroughly to see why the vehicle is going lean. The possible causes are that you are loosing fuel pressure or fuel volume. If fuel pressure gets too low it will cause the...

Q: My engine light is on, has increased emissions and reduced power, and car also shakes

Hello, thanks for writing in. The coolant temperature code can be due to low coolant or a failure in the thermostat. Most of the time this is a thermostat issue. As for the misfire problem, it is common for one...

Q: Check engine light came on while driving

The Check Engine Light is an indicator that something is affecting your emissions in a negative way. This can be as simple as a loose gas cap, to a misfire and many things contribute to the overall emissions output. The...

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.

1-800-701-6230 · hi@yourmechanic.com