Exception in rendering!

Message: window is not defined

ReferenceError: window is not defined
    at new c (/tmp/execjs20161209-75876-1jhvk6djs:136:3912)
    at m.mountComponent (/tmp/execjs20161209-75876-1jhvk6djs:47:15602)
    at /tmp/execjs20161209-75876-1jhvk6djs:49:31860
    at a.r.perform (/tmp/execjs20161209-75876-1jhvk6djs:47:12503)
    at Object.a [as renderToString] (/tmp/execjs20161209-75876-1jhvk6djs:49:31821)
    at r (/tmp/execjs20161209-75876-1jhvk6djs:50:21164)
    at Object.S.ReactOnRails.serverRenderReactComponent (/tmp/execjs20161209-75876-1jhvk6djs:32:6073)
    at eval (eval at <anonymous> (/tmp/execjs20161209-75876-1jhvk6djs:173:8), <anonymous>:10:23)
    at eval (eval at <anonymous> (/tmp/execjs20161209-75876-1jhvk6djs:173:8), <anonymous>:17:3)
    at /tmp/execjs20161209-75876-1jhvk6djs:173:8

P0280 OBD-II Trouble Code: Cylinder 7 Injector Circuit High

Check Engine Light

P0280 code definition

P0280 is the universal OBD-II code for Cylinder 7 Injector Circuit High.

What the P0280 code means

This code indicates that the engine control module (ECM) has detected a problem in the cylinder 7 injector circuit. This typically means that either the voltage or resistance are out of range of the expected specifications, resulting in poor or nonexistent fuel injector performance.

What causes the P0280 code?

A vehicle will set an injector circuit code when one or more of the following conditions are present:

  • A dirty or plugged fuel injector
  • A bad fuel injector
  • An electrical fault in the wiring, connectors, or harness from the ECM to the injector
  • A malfunction in the fuel injector driver in the ECM
  • Loose injector connections
  • A faulty ECM (rare)

What are the symptoms of the P0280 code?

Aside from the stored code, symptoms of this DTC may include:

  • An illuminated malfunction indicator light (MIL)
  • Engine idling rough
  • Decreased fuel efficiency
  • Poor acceleration/decrease in engine power
  • Engine misfires

How does a mechanic diagnose the P0280 code?

Diagnostic steps your technician may perform for this code are as follows:

  • Scan the vehicle’s computer for other stored codes, capture freeze frame data, and address the codes in the order in which they occurred

  • Clear all fault codes and road test the vehicle to rule out an intermittent condition

  • Visually inspect the injector electrical connector, checking for bent or otherwise damaged pins

  • With the engine running, hold a screwdriver handle to his or her ear with the tip on the injector to check for a slight clicking sound (indicating the injector is working)

  • Disconnect the injector and use an ohmmeter to test the resistance between the terminals to see if it is between .5 and 2 ohms

Common mistakes when diagnosing the P0280 code

The ECM is sometimes replaced in error, when the problem actually lies in the electrical components of the injector, or the injector is dirty or clogged. True ECM failure is rare. It’s a good idea to begin by inspecting all of the involved wiring and connections to make sure there’s not a simple fix.

How serious is the P0280 code?

Fuel injector codes should be addressed as soon as possible. A malfunction in an injector can cause a ripple effect which will eventually compromise the spark plug, the oxygen sensor, and even the catalytic converter. A cylinder 7 injector circuit fault will trigger the vehicle’s computer to think that it needs to initiate a richer fuel mixture from the other injectors. This causes a domino effect that can damage multiple vehicle components.

What repairs can fix the P0280 code?

Fixing a fuel injector circuit malfunction may include:

Most fuel injector issues are the result of wiring or connections which need repairing, a dirty or plugged injector, or a bad injector that needs replacing.

Additional comments for consideration regarding the P0280 code

Fuel injector trouble codes become more and more likely the older a vehicle gets, and the higher the mileage it has. Keeping your fuel system clean can help delay fuel injector problems from developing.

There are several specialty auto repair tools which make diagnosing and repairing injector codes much easier. Due to the potential for damage to other vehicle components, it’s a good idea to let a professional assess and repair code P0280.

If you decide to attack a cylinder 7 injector malfunction yourself, you might consider acquiring a noid light set, a professional-grade scan tool, and a direct injection cleaning kit. If you run into trouble, don’t hesitate to contact a professional for assistance in order to avoid making an incorrect repair which could trigger further damage.

Need help with a P0280 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

Post a question and get free advice from our certified mechanics.

ASK A QUESTION

More related articles

Symptoms of a Bad or Failing Flexible Clutch Hose
Common signs include difficulty shifting, low clutch fluid, and feeling no resistance at the clutch pedal.
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...


Related questions

Q: Misfire and P0420

Hello - the P0420 and the inconsistent waveform for the post-cat O2 sensor might be related to your failing intake manifold gasket issue. If tiny droplets of coolant are being sucked into the engine - one failure mode for this...

Q: Engine light On and car jerks from 2000-3000rpm

Continual failure of the camshaft sensor may suggest that you have some bad wiring leading to the plug where the cam sensor is plugged in. The internal circuitry and the wires that connect the sensor to power and to the...

Q: AT light and Check engine light on stuck in third gear.

A logical place to start is with a Check Engine Light inspection to see what codes might be set. Usually with something of this nature, codes will be present, and there will be a flow chart that should be used...