Skip the auto shop - Our mechanics make house calls

P2289 OBD-II Trouble Code: Injector Control Press Too High-Engine Off

Check Engine Light

P2289 code definition

Injector Control Press Too High-Engine Off

What the P2289 code means

P2289 is an OBD-II code for the engine control module (ECM) detecting the injector control pressure (ICP) sensor is registering a fuel pressure that is above specifications with the engine off.

What causes the P2289 code?

  • The ICP sensor or the FRP (Fuel Rail Pressure) sensor is not biased correctly and reading incorrect pressures.

  • The ICP sensor is registering the engine off fuel pressure above specified fuel pressure range.

  • There is a defective FRP sensor detecting higher than normal pressures

What are the symptoms of the P2289 code?

  • The Check Engine Light will be illuminated and the code will set in the ECM memory as a fault.

  • The engine may run normal if the pressures are normal and rich if the pressure is too high.

  • The engine may run rich if the fuel pressures are above specified range.

How does a mechanic diagnose the P2289 code?

  • Scans for codes and documents the code in the ECM, and looks at the freeze frame data for failure

  • Follows the manufacture pinpoint test procedures and specifications for checking fuel pressures

  • Follows the manufacture pinpoint testing for the ICP code received

  • Checks fuel pressure at specified engine RPM levels and compares it to specifications using a gauge

  • Compares test readings with a gauge to the sensor readings for the ICP and FRP

Common mistakes when diagnosing the P2289 code?

  • Clearing ECM memory codes before checking the freeze frame data for the main failure problem, so the failure may be duplicated and repaired

  • Failing to follow the manufacturer pinpoint tests for the application

  • Replacing the ICP, assuming the part is the failure without verification

How serious is the P2289 code?

Code P2289 indicates the engine ECM is detecting the ICP not getting a normal fuel pressure when the engine is off, and that the pressure is too high above specifications. This can lead to injectors leaking after the engine is off and flooding the engine with fuel.

What repairs can fix the P2289 code?

Additional comments for consideration regarding the P2289 code

Code P2289 is most commonly caused by a biased ICP internally, or a FRP signal biased differently causing a disparity between the two readings. The fuel pressure testing will show which one of the two is not registering correct pressures.

Need help with a P2289 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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

Insurance Requirements for Car Registration in Kentucky
The Kentucky Transportation Cabinet requires that all drivers in Kentucky carry liability automotive insurance, or “financial responsibility” in order to operate a vehicle legally and maintain vehicle...
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...
How to Get a Louisiana Driver's Permit
s licensing program. The first step in this program is to obtain...


Related questions

Q: Car stopped randomly and didn't drive afterwards

Hello, thanks for writing in. The computer will go into a failure mode and may not allow the electronic throttle to open if it detects a major computer or sensor fault. There can be many possible failures that will cause...

Q: Code p0128

Your vehicle does not have a coolant sensor and uses the cylinder head temperature sensor to do both jobs. The system uses this sensor to sense both the coolant and head temperature. If your vehicle fan is running all the...

Q: The Check Engine Light came on, I hooked it up to my scanner and got the code P0308 (cylinder #8 misfire).

An easy way to isolate if the ignition coil is the problem is to swap the #8 coil with another cylinder. Swap the #8 coil with the coil from the adjacent cylinder, then clear the codes. If the code remains...