P1653 Fuel Pump Speed Control Circuit Malfunction

How to Diagnose and Solve P1653 Fuel Pump Speed Control Circuit Malfunction Issues


Are you a car enthusiast who loves to get your hands dirty? Or perhaps you’re a DIYer who enjoys the satisfaction of fixing things yourself? If you’ve been experiencing issues with your vehicle and the diagnostic trouble code (DTC) P1653 has popped up, you’re in the right place. This article will guide you through the process of diagnosing and solving P1653 Fuel Pump Speed Control Circuit Malfunction issues.

Understanding P1653 Fuel Pump Speed Control Circuit Malfunction

Before we dive into the nitty-gritty of fixing this issue, let’s first understand what it means. The P1653 code is a generic powertrain code related to vehicle speed controls and idle control system problems. It indicates that the powertrain control module (PCM) has detected a malfunction in the fuel pump speed control circuit.

What Causes P1653 Code?

The P1653 code can be triggered by several factors, including:

1. Faulty fuel pump
2. Damaged or corroded wiring
3. Faulty fuel pump relay
4. Faulty PCM

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Diagnosing P1653 Fuel Pump Speed Control Circuit Malfunction

Now that we know what the P1653 code means and what can cause it, let’s move on to diagnosing the problem.

Step 1: Visual Inspection

Start by visually inspecting the fuel pump, wiring, and relay. Look for any signs of damage, corrosion, or loose connections.

Step 2: Use a Diagnostic Scanner

Next, use a diagnostic scanner to read the fault codes from the PCM. This will help you identify any other related issues that might be causing the P1653 code.

Step 3: Test the Fuel Pump

You can test the fuel pump by checking the fuel pressure with a fuel pressure gauge. If the pressure is too low, it could indicate a problem with the fuel pump.

Solving P1653 Fuel Pump Speed Control Circuit Malfunction

After diagnosing the problem, it’s time to fix it. Here’s how:

Step 1: Replace Damaged Components

If you found any damaged or corroded components during your visual inspection, replace them. This includes the fuel pump, wiring, and relay.

Step 2: Reset the PCM

After replacing any faulty components, reset the PCM to clear the P1653 code. You can do this by disconnecting the battery for a few minutes and then reconnecting it.

Step 3: Test Drive

Finally, take your vehicle for a test drive to see if the P1653 code reappears. If it does, you may need to take your vehicle to a professional mechanic for further diagnosis and repair.


Dealing with a P1653 Fuel Pump Speed Control Circuit Malfunction can be a bit daunting, but with a little patience and the right tools, you can diagnose and solve this issue yourself. Remember, if the problem persists after your DIY efforts, don’t hesitate to seek professional help.


1. Can I drive my car with a P1653 code?
While it might not cause immediate damage, driving with a P1653 code can lead to serious issues over time, such as reduced fuel efficiency or engine damage. It’s best to address the problem as soon as possible.

2. How much does it cost to fix a P1653 code?
The cost to fix a P1653 code can vary widely depending on the cause. If you need to replace the fuel pump, for example, the cost could range from $300 to $600.

3. Can a faulty fuel pump cause a P1653 code?
Yes, a faulty fuel pump is one of the common causes of a P1653 code. Other potential causes include damaged wiring, a faulty fuel pump relay, or a faulty PCM.