P1650 code — how to fix error fast

One of the OBD2 codes that could affect the performance of your car’s engine for the worse is the P1650 code. While many drivers are ignorant of the P1650 code meaning and the way it affects their cars, it’s more dangerous than you may think, so it requires getting geared up for repairs pretty fast.

We know you could use a bit of professional advice in this case, which is why our team devoted itself to bringing you all the details on this code. We’ll discuss the essentials regarding code P1650 causes diagnostic methods, and solutions to help you deal with this ASAP.

Why you can trust REREV’s OBD2 code advice: Our automotive expert researchers with experienced mechanics undertakes a thorough research methodology to deliver precise insights on OBD codes. Find out more about OBD2 codes research process..

What does the P1650 code mean?

The P1650 code is a diagnostic trouble code (DTC) that is related to the powertrain control module (PCM) in a vehicle. It indicates a malfunction in the electronic throttle control system (ETCS). This code is important to understand because it can cause drivability issues and affect the overall performance of the vehicle.

In other words, vehicles with electronic throttle control systems may suffer if there’s a failure and possible consequences include rough idling, poor throttle response when overtaking, and reduced engine performance which could all affect your driving safety.

What causes the P1650 code?

There are all sorts of possible reasons behind the code P1650 so it’s important to know them all. Our team wants you to have all the options in consideration since you never know which of the following causes might have triggered the code in your car:

Malfunctioning throttle actuator control (TAC) motor

The TAC motor is responsible for opening and closing the throttle plate. If it malfunctions, it can cause the P1650 code to occur. Symptoms that may be present with this cause include a rough idle, poor acceleration, and stalling.

Malfunctioning throttle actuator control (TAC) module

The TAC module is responsible for receiving signals from the accelerator pedal position sensor and sending signals to the TAC motor. If it malfunctions, it can cause the P1650 code to occur. Symptoms that may be present with this cause include a reduced engine power message, poor acceleration, and stalling.

Wiring issues

Wiring issues can also cause the P1650 code to occur. This can be due to damaged or corroded wires, poor connections, or a short circuit. Symptoms that may be present with this cause include intermittent issues, poor acceleration, and stalling.

PCM issues

Finally, issues with the PCM can also cause the P1650 code to occur. This can be due to a faulty PCM or a software issue. Symptoms that may be present with this cause include poor acceleration, stalling, and a reduced engine power message.

Which car models does the P1650 code affect the most?

While most cars are exposed to code P1650 in case there’s an issue with the PCM or the throttle actuator module, some vehicles are said to be more prone to this code than others. These include the following cars:

• Chevy Cobalt: The Cobalt and Cobalt SS models have been reported to suffer from faulty throttle position sensor which may interfere with the way the ECM controls the power distribution and trigger the code P1650.
• Chrysler Sebring: This model is susceptible to code P1650 due to problems with wiring and electrical connections.

How to diagnose the P1650 code

There are all sorts of possible ways to diagnose the code P1650 and using a scanner tool isn’t the only option out there. Still, it takes some expertise to apply these methods, so here’s an overview of these as recommended by our team:

Using an OBD2 scanner

The first step in diagnosing any DTC, including P1650, is to use an OBD2 scanner to retrieve the code and any other relevant data. The scanner will provide information on the specific system or component that is causing the code to appear, which can help narrow down the potential causes.

Checking for loose or damaged connections

Faulty wiring or loose connections between the PCM and other engine components can also cause the P1650 code to appear. A mechanic may inspect the wiring and connections between the PCM and other components to ensure that everything is properly connected and functioning as it should.

Testing the sensors

A faulty engine sensor, such as the throttle position sensor (TPS) or crankshaft position sensor (CKP), can also trigger the P1650 code. A mechanic may test these sensors to ensure that they are providing accurate readings and functioning properly.

Checking the PCM for malfunctions

If all other potential causes have been ruled out, then it’s possible that the PCM itself is malfunctioning and causing the P1650 code to appear. A mechanic may perform additional tests on the PCM to determine if this is the case.

How to fix the P1650 code

Fixing OBD2 code P1650 can vary greatly depending on the specific cause of the code. However, here are some of the main ways that a mechanic may fix the code once you’ve properly diagnosed it:

Repairing or fixing the connections

If the P1650 code is caused by faulty wiring or loose connections between the PCM and other engine components, then a mechanic may repair or replace any damaged wires or connections to ensure that everything is properly connected and functioning as it should.

Replacing faulty sensors

If a faulty engine sensor, such as the throttle position sensor (TPS) or crankshaft position sensor (CKP), is causing the P1650 code to appear, then a mechanic may replace the failed sensor with a new one.

Replace a faulty actuator

An actuator is a device that controls the movement of various engine components, such as the variable valve timing system or the fuel injectors. If an actuator fails and triggers the P1650 code, then a mechanic may replace the failed actuator with a new one.

Tune up the PCM

If all other potential causes have been ruled out and it’s determined that the PCM itself is malfunctioning and causing the P1650 code to appear, then a mechanic may need to replace the PCM with a new one.

How to prevent the P1650 code

Preventing the P1650 code requires routine maintenance and proper care of the affected system. Here are some tips to prevent the code from occurring:

1. Perform regular maintenance on the throttle body and TAC system.
2. Keep the throttle body and TAC system clean and free of debris.
3. Check the wiring and connections regularly for any signs of damage or wear.
4. Use high-quality parts and products when performing any repairs or maintenance.

By following these preventative measures, you can help ensure that the P1650 code doesn’t occur in the future and that your vehicle runs smoothly.

Our take

In the end, the code P1650 can be easily fixed and prevented as long as you act on time and use the pieces of information listed in this guide. We hope to have helped with this article as our team truly had the will to change the outcome of this code for the better for you.

That means dealing with the code in a fast and cost-effective manner and preventing it from ever coming back on, so we are happy if this guide helps you do that.