P0232 Code On 6.0 Powerstroke: Symptoms, Diagnosis, And Fixes

Are you driving your ford 6.0 Powerstroke and experiencing the dreaded P0232 code? If so, you’re not alone – this code is becoming increasingly common on Powerstroke engines. In this post, we’ll outline what code p0232 on a Powerstroke engine means, discuss the causes and symptoms of this issue, and offer a few tips for fixing it. We also provide information on how much it costs to get this issue fixed – so whether you’re on a budget or just want to avoid future headaches, we’ve got you covered!

P0232 Code On 6.0 Powerstroke: Symptoms, Diagnosis, And Fixes

What is Code p0232 on 6.0 Powerstroke and what does it mean?

If you’re unfamiliar with code p0232 on your 6.0 Powerstroke engine, it means the secondary circuit to the fuel pump has a high voltage when the fuel pump relay is turned off. This high voltage DTC Code P0232 error detects by your ford 6.0 Powerstroke inbuilt ECM (Engine Control module) and keeps this error in the ECM memory. This error can be caused by a number of issues and requires a diagnosis and repair by a qualified mechanic. In the meantime, it’s important to keep an eye on the fuel pump relay and make any necessary repairs as soon as possible.

What is the secondary circuit on a fuel pump? What does It Do?

The secondary circuit on a fuel pump is for voltage regulation. It keeps the fuel pump working at a consistent voltage so it can deliver power to the engine correctly.

Where Does Secondary Circuit is Located?

The secondary circuit is typically located close to the PCM. This circuit monitors the voltage being sent to the fuel pump and makes sure it is consistent.

What are the Possible Causes of the P0232 code appearing on 6.0 Powerstroke?

There are a variety of factors that can lead to the P0232 code appearing on your 6.0 Powerstroke engine, including:

  • A failed fuel pump relay
  • Blown Fuel Pump Fuse
  • Damaged or worn out components in this circuit
  • Damaged ECM (Engine Control Module)
  • Poorly tightened fuel lines or connectors
  • A blown engine seal

When The fuel pump relay is stuck On; Meaning it continues supplying the power this issue can arise from a number of things, but the most common cause is when the fuel pump relay gets stuck on. This means that it’s still supplying power to the secondary circuit to the fuel pump even after the engine has stopped. If this happens, it can result in a high voltage in the circuit, which can cause problems.

Symptoms of Code P0232 fuel pump secondary circuit high On 6.0 Powerstroke

If you’re experiencing any of the following symptoms, it’s likely that your engine has a code P0232 issue and requires professional repair:

  1. The Check Engine Light Flashing
  2. The vehicle Suddenly stops and will not start
  3. The fuel pump runs continuously even when the ignition is off
  4. There is high voltage in the secondary circuit to the fuel pump
  5. Battery Drainage

The Check Engine Light Flashing

Flashing the CEL (Check Engine Light) is the main indicator of any malfunction in the vehicle, it means that there is something wrong with your engine. Your vehicle’s CEL can be illuminated due to the Fuel Pump Secondary Circuit High issue. However, Check Engine Light can be illuminated for various reasons so it is best to use the OBD II scanner to get an accurate reading to know the exact reason.

Fuel Pump Continue To Run:

The fuel pump continues to run even when the engine is off if the fuel pump relay or wiring has malfunctioned in some way. Fuel pump runs continuously means that power is being supplied to fuel pumps and it will suck fuel out of your tank, eventually leading to high battery drainage.

Battery Drainage Issue

If the battery is drained while the engine is off, it might mean there’s an electrical circuit problem that’s causing power to flow even when the engine isn’t running. This high voltage can damage various components in your car, including your fuel pump.

Suddenly Engine Turned Off And Fail To Start

Unable to start the engine even after sitting for a while, might indicate an issue with the fuel pump secondary circuit. If the voltage is too high for the fuel pump relay or wiring, it can cause the engine not to start.

Diagnosing Code P0232 on 6.0 Powerstroke

In order to diagnose code P0232, it is necessary to use a scanner and get a reading for the fuel pump secondary circuit high. Once you know the reason for CEL light flashing, you can take appropriate actions to fix and/or prevent damage from happening in the future.

Scan The Code Using OBD II scanner For Verifying The Problem

If you’re experiencing the above symptoms, it is important to scan the DTC code using an OBDII scanner to verify the problem. The scan will give you a detailed description of the issue with your truck and what needs to be done to fix it. Always keep a scanner handy in case you experience any issues with your vehicle, so that you won’t have to wait for a mechanic to come out and take a look for you.

Check The Battery Power

When you find that the battery power is passing to the fuel pump secondary circuit even after the engine is turned off, it could be due to the secondary circuit to the fuel pump having a high voltage and triggering the P0232 code on your 6.0 Powerstroke. To troubleshoot this issue, you will need to replace the fuel pump relay assembly or connector. Alternatively, you can check this by using a scan tool or voltmeter. If the battery power is not passing, then it could be due to a bad fuel pump relay assembly or connector. In this case, you will need to take your 6.0 Powerstroke for service.

Check Battery is Draining Unexpectedly

Your mechanic will check to see if the battery power is draining unexpectedly through the IFS and fuel pump relay when the engine is turned off. If it turns out that this isn’t occurring, then there could be something wrong with your fuel pump circuit or pump. In this case, you will need to have your fuel pump replaced.

Check the fuel pump relay manually to see is that okay or not

A simple tap test on the fuel pump relay can let you know if it’s working or sticking. If the voltage still passes even after the engine stops then it means the fuel pump relay is sticking and need to be replaced.

Check for an internal short in the ECM

Another check that your mechanic can perform on your 6.0 Powerstroke is to scan for an internal short in the ECM. If they find one, it will require replacing the ECM which is a more expensive repair than just replacing the fuel pump relay assembly or connector.

How to fix Code P0232 on 6.0 Powerstroke: Fuel Pump Secondary Circuit High Issue

Having code P0232 on a 6.0 Powerstroke engine can mean one of two things: either the fuel pump is continuing to run even after the engine has been turned off by the key, or there’s an issue with the fuel pump relay connector. In either case, fixing it will require a repair technician to take a look at the engine.

Replacing the fuel pump relay

To fix the DTC P0232 on 6.0 Powerstroke you need to replace the fuel pump relay if you find the fuel pump relay is the issue. This is a relatively easy repair and can be done in just a few minutes by a technician with the right tools. Follow these steps for replacing the fuel pump relay

  1. Disconnect the cables from the engine battery to shut off the power
  2. Open the hood and find the fuse box. On 6.0 Powerstroke engines, this will be located in the engine compartment between the driver’s side strut tower and the engine’s battery
  3. Remove the fuel pump relay by removing it from its connector on the fuel pump
  4. guide old relay for placement of new one. Install new relay and connect connectors
  5. Repressurize fuel system after replacing the relay
  6. Close the hood and turn on the engine to test.

Fixing the fuel pump relay connector if that shorted to power

If the fuel pump relay connector is shorted to power, then code P0232 will be set. This issue can be a bit more challenging to fix as it requires removing the fuel pump and reconnecting the wires correctly. A technician with experience in repairs like this might be needed for the best results.

Replacing the battery

If the error code P0232 still exists after trying to fix the fuel pump relay connector or the fuel pump itself, then it may be time to replace the battery. This is a fairly simple job that can be done in just a few minutes by anyone with basic mechanical skills.

What Will Happen If You Not Fix The P0232 Error code?

Running the vehicle with the P0232 code still set will cause various issues, such as a failing fuel pump relay and damaged wiring. In some cases, this may also lead to a battery failure.

Look, when the relay is stuck in the ON position, the fuel pump secondary circuit continuously sends signals to the pump, until the battery dies. If you’re experiencing any of these symptoms, it’s important to take action and fix the issue as soon as possible.

How Much Does It Cost To Fix Fuel Pump Secondary Circuit High (P0232 code)?

This type of repair can cost anywhere from around $120 for a new fuel pump relay to upwards of $600 for a battery replacement. This will vary depending on the severity and location of the issue.

Conclusion

Finally, if the P0232 code is present, then it may be time to take some steps to fix the issue. Depending on what is causing the code, different repairs may need to be attempted. In most cases, however, a battery replacement or fuel pump relay will fix the problem and return your vehicle to normal operation.

Last Updated on May 27, 2022 by Rifen

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