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P1670 Code 7.3 Powerstroke

The Ford 7.3L Powerstroke engine has built-in diagnostic mechanisms to alert users of any issues with the engine via DTCs (Diagnostic Trouble Codes). One such P1670 Code 7.3 Powerstroke, which can indicate a wide range of problems from faulty wiring to failing components.

This article explains the symptoms associated with this code and provides an overview of potential solutions for repair. By understanding what DTC P1670 means, drivers can be better equipped to identify and address underlying engine troubles in their vehicle thus avoiding potential costly repairs or breakdowns.

What Does P1670 Code 7.3L Powerstroke Mean?

What Does P1670 Code 7.3L Powerstroke Mean
What Does P1670 Code 7.3L Powerstroke Mean?

The Ford 7.3L engine is one of the most popular engines in use today, and its diagnostic codes are used to identify issues that can arise with it. One such code is P1670, which refers to Electronic Feedback (EF) Signal Not Detected. The PCM (Powertrain Control Module) communicates with the IDM (Injector Driver Module), and without this communication there are several problems that may arise. The symptoms associated with this lack of connectivity will be discussed in further detail below.

Symptoms Of Getting The P1670 Code 7.3L Powerstroke

The visible symptoms of the trouble code P1670 are recognizable, as with any other DTCs. If the vehicle is exhibiting signs such as reduced power, stalling, hard starting and poor fuel economy, then it is likely that this error code has been triggered:

  • Service Engine Soon Warning Light is On
  • Irregular Revolutions Per Minute (RPM)
  • Engine Won’t Start At All

P1670 may present itself with a few symptoms, including illumination of the check engine light and inconsistent vehicle performance.

Factors Causing Error Code P1670

The Error code P1670 can appear for a variety of reasons, and unfortunately cannot be prevented from occurring. Many of these causes are related to the IDM (Intelligent Digital Module):

  • Damaged Injector Driver Module Relay
  • Shorted or Open Injector Driver Module Enable Circuit
  • Short or Open in Electric Feedback Circuit
  • Short or Open in FDCS (Fuel Delivery Command Signal) Circuit
  • Short or Open Fuses
  • Damaged Injector Driver Module

It is a warning that even if only one of the six possible factors is present, it can still lead to a P1670 Code 7.3L Powerstroke.

How Important is the P1670 Code on the 7.3L Powerstroke?

How Important is the P1670 Code on the 7.3L Powerstroke
How Important is the P1670 Code on the 7.3L Powerstroke?

Receiving irregular RPM signals from your 7.3L Powerstroke engine can be a sign of trouble. To prevent further damage, it is important to address the P1670 error code in a timely manner before it causes serious issues with your vehicle's performance. As understanding how Revolutions Per Minute or RPM works is integral to resolving this issue, consulting an expert mechanic may be beneficial in order to get the job done right and ensure that your engine continues running smoothly. By following the steps outlined in this article, you can gain an idea of what needs to be done in order to fix P1670 code 7.3 Powerstroke and keep your car running optimally for years to come.

How To Solve P1670 Error Code On 7.3L Powerstroke?

It is important to have all of the necessary equipment and tools required for a given engine model prior to beginning any type of troubleshooting process. This includes opening wirings, connectors and even the IDM in order to alleviate error codes. Once the proper equipment kit has been acquired, it is time to begin with the troubleshooting methods.

Replace IDM Relay & Fuses

Relay is an invaluable tool when it comes to automating connections between two components. Acting as an electrical switch, relays are capable of operating independently. If the IDM relays appear to be faulty, check and replace them with new ones if necessary. Automotive fuses can help protect wirings and connectors from over-current issues in vehicles such as Ford 7.3Ls; if a fuse has been damaged due to such an issue, replacing it should resolve any corresponding error codes encountered by the user.

Clean & Replace All Wirings

The Injector Driver Module (IDM) is a key component of the car, and when inspecting it, one should check the wiring and connectors under its hood. Should any inconveniences be discovered, they can easily be replaced with new ones as they are relatively inexpensive. Commonly, code P1670 occurs because of shorts in the wiring which can also be fixed by replacing them.

Perform KOEO Self-Test For Other Codes

The individual may be having more IDM codes than simply P1670. To determine if there are additional codes present, a KOEO (Key On Engine Off) Self-Test or Buzz test should be performed. If any other trouble codes appear from the IDM, it is recommended that an expert is consulted to help identify and address the issue. In certain cases, problems with the IDM can lead to defects in the PCM and therefore caution must be taken when diagnosing such issues.

Check & Replace The IDM

The ultimate solution for error code P1670 is to replace the IDM, or Ignition Control Module. Diagnostic Trouble Code P1298 after KOEO Self-Test is a definitive indication that the IDM should be replaced, as it indicates a defective module. If none of the suggested methods are effective in correcting this issue, then replacing the IDM remains an appropriate course of action even if there are no other codes present besides P1670.

How Much Does It Cost To Solve The Error Code P1670

The cost of replacing components to resolve the error code P1670 will depend on how many components need replacement; a price list is available for reference:

  • Automotive Fuses: $110 to $140
  • IDM Relays: $30 Each
  • IDM: $250 to $400

It is recommended that one consider adding the labor cost of $75 to $150 per hour if they do not wish to attempt fixing the error code on their own.

Common Mistakes When Decoding P1670

It is important to be mindful of potential mistakes when dealing with the P1670, and double-checking for any of the common errors listed below can help ensure accuracy:

  • Not Checking The Wirings Before Replacing The IDM
  • Not Conducting KOEO Self-Test For Better Diagnosis

Things to Consider About the P1670 Code

The user may not be aware of any symptoms beyond the active engine light. However, ignoring this error code can lead to even more serious problems for both their wallet and engine. This article provides a thorough explanation about P1670 and its possible causes and symptoms for those who are looking for quick solutions. While it is user-friendly enough that general users can troubleshoot on their own, expert help should be consulted in case of difficulty solving the issue.

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