P0253 OBD-II Trouble Code: Injection Pump Fuel Metering Control "A" Low (Cam/Rotor/Injector)

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

Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0253 code

P0253 is a diagnostic trouble code (DTC) for "Injection Pump Fuel Metering Control "A" Low (Cam/Rotor/Injector)". 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. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 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$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P0253 DIAGNOSTIC Get a fair and transparent estimate upfront

P0253 code definition

This trouble code identifies an Injection Pump Fuel Metering Control “A” Low (Cam/Rotor/Injector) problem.

What the P0253 code means

This code only ever gets stored on the PCMs (Powertrain Control Module) of diesel engines. It means that the vehicle’s PCM has detected an inconsistency between the electronic fuel control actuator’s signal voltage that was sent out and the one returned by the fuel metering sensor control.

All diesel injection systems rely on some type of an electronic fuel control actuator which is responsible for measuring the amount of fuel that is allowed into the actual pumping chamber of a high pressure diesel fuel pump. Therefore, this device determines how much fuel is going to be delivered to the fuel rail and by how much pressure.

This pressure needs to be controlled, though, and the acceptable range is very narrow. The vehicle’s PCM is constantly checking in on this process through a variable resistance sensor. If the vehicle’s PCM notes that the reading is inaccurate due to an inconsistency between signals, this code gets stored.

What causes the P0253 code?

There are a few common reasons behind the P0253 code getting stored:

  • The fuel filter has become clogged or dirty

  • The fuel pump is defective

  • The fuel control actuator driver inside the PCM is actually faulty

This last possibility is pretty rare.

What are the symptoms of the P0253 code?

Sometimes, there will be only minor symptoms associated with this problem. The Check Engine Light may come on, for example, but nothing more. Other times, though, more noticeable symptoms may appear, such as:

  • The engine has trouble starting
  • The engine won’t start at all
  • The exhaust produces excessive smoke
  • The engine misfires
  • The engine struggles to accelerate

How does a mechanic diagnose the P0253 code?

A mechanic will need to do the following to diagnose the problems associated with the P0253 code:

  • Use an OBD-II scanner to download the vehicle’s stored codes.
  • They’ll examine the circuitry and connectors between PCM and fuel control actuator.
  • Next, they’ll look at the circuitry and connectors
  • If any of the more serious symptoms were reported by the customer, the mechanic will try to recreate them.

Common mistakes when diagnosing the P0253 code

Far too often, a mechanic sees this code and immediately goes to work replacing the injector pump or injectors. However, more often than not, it’s the fuel filter that is the problem. After that, the most common problem is usually the wiring and/or connectors.

How serious is the P0253 code?

The most serious concern attached to the P0253 code – or any trouble code reported from a diesel-engine vehicle – is that an amateur will try fixing the problem on their own. These engines work under extremely high pressures and can be extremely dangerous, especially if the amateur is trying to work on a fuel pump.

Outside of that, this is still a problem that should get fixed right away before it turns into something worse. Anytime the engine is struggling, there’s a risk that a bigger problem is brewing.

What repairs can fix the P0253 code?

Clearing this code may not require any more than simply cleaning the fuel filter. Even though we mentioned that it’s generally not necessary, the fuel pump may have to be replaced too.

Otherwise, the mechanic probably doesn’t have to do much more than examine the connectors and circuits coming from the fuel control actuator and connecting to the PCM. Chances are they’re frayed, damaged or shorted and just need to be repaired or replaced.

Additional comments for consideration regarding the P0253 code

When working on a diesel engine’s fuel system, it’s essential that the mechanic observe safety guidelines, especially if they intend to release any of its residual pressure before proceeding with repairs.

Need help with a P0253 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
P0253

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P0253 code.

SCHEDULE P0253 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.8/5

Number of Reviews

5,064

Rating Summary
4,665
194
48
27
130
4,665
194
48
27
130

Mario

8 years of experience
22 reviews
Mario
8 years of experience
Chrysler PT Cruiser - Check Engine Light is on - Los Angeles, California
He was very courteous and knowledgeable. You can tell he knows his trade. Satisfied with his service.

Yoel

8 years of experience
91 reviews
Yoel
8 years of experience
Nissan Versa Note - Check Engine Light is on - Upper Darby, Pennsylvania
Yoel is very competent and provides great customer service. He took the time to explain and show me exactly what was going with my car. I will definitely use him again and recommend him to others.

Jason

31 years of experience
148 reviews
Jason
31 years of experience
Ford Explorer - Check Engine Light is on - Phoenix, Arizona
Jason was on time, friendly, explained everything he was doing and let me know the other services available, so when Jason comes back to install the new part I am having the oil changed too.

DeVaughn

25 years of experience
1 reviews
DeVaughn
25 years of experience
BMW X3 - Check Engine Light is on - Moreno Valley, California
The mechanic arrived on time, completed the work, which was replacement of an oxygen sensor, in a timely and professional manner.


More related articles

P0254 OBD-II Trouble Code: Injection Pump Fuel Metering Control “A” High (Cam/Rotor/Injector)
The The P0254 Trouble Code indicates issues with the inject pump fuel metering control “A” high (cam/rotor/injector). What the P0254 code means When this code appears, it means that the powertrain control module has found an issue with the signal...
P0029 OBD-II Trouble Code: Exhaust Valve Control Solenoid Circuit Range/Performance (Bank 2)
P0029 P0029 trouble code definition Exhaust Valve Control Solenoid Circuit Range/Performance (Bank 2) What the P0029 code means P0029 is the OBD-II generic code indicating the engine control module (ECM) has determined that the variable valve lift solenoid for the...
P0664 OBD-II Trouble code: Intake Manifold Tuning Valve Control Circuit Low Bank 2
P0664 means an electrical error occured in the intake manifold tuning valve control circuit due to a faulty PCM driver or electrical component.

Related questions

Code P2A00,, sensor was replaced, eng.light back.This was after 2x replacing. Relearn MAF done, and:vibration at stop after drive

The code P2a00 can be caused by a few different causes. The O2 sensor or wiring, exhaust gasket leak, clogged injectors or a catalyst problem. Have all these items checked and replace or repair as needed. If you need assistance...

P0442

As you may already know, this may be related to a faulty or leaking gas cap, however this can also be related to several other factors such as the following: A non-conforming gas cap (i.e. not factory/original brand) A...

Egr and evap codes 455 & 405

The trouble code P0405 is for the EGR sensor. This code indicates that the sensor is not giving correct voltage readings. You'll need to replace the sensor and the sensor hoses. The hoses can clog or burn through which causes...

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