How to Fix P1236 Fuel Pump Secondary Circuit Low
Introduction
If you’re experiencing issues with your car’s fuel pump, you may have encountered the P1236 error code. This code indicates that there is a problem with the fuel pump secondary circuit, which can cause your car to stall or not start at all. Fortunately, there are several steps you can take to fix this issue and get your car back on the road.
Step 1: Check the Fuel Pump Relay
The first step in fixing the P1236 error code is to check the fuel pump relay. This relay is responsible for sending power to the fuel pump, and if it’s not working correctly, your car won’t start. To check the relay, locate it in your car’s fuse box and remove it. Use a multimeter to test the relay’s resistance and make sure it’s within the manufacturer’s specifications. If the relay is faulty, replace it with a new one.
Step 2: Inspect the Fuel Pump Wiring
If the fuel pump relay is working correctly, the next step is to inspect the fuel pump wiring. Look for any signs of damage or wear, such as frayed wires or loose connections. If you find any issues, repair or replace the wiring as necessary.
Step 3: Check the Fuel Pump
If the fuel pump relay and wiring are both in good condition, the next step is to check the fuel pump itself. To do this, you’ll need to remove the fuel pump from your car and test it using a multimeter. Check the pump’s resistance and make sure it’s within the manufacturer’s specifications. If the pump is faulty, replace it with a new one.
Step 4: Replace the Fuel Pump Driver Module
If the fuel pump is working correctly, but you’re still experiencing issues with the P1236 error code, the problem may be with the fuel pump driver module. This module is responsible for controlling the fuel pump’s speed and can cause issues if it’s not working correctly. To replace the module, locate it in your car’s engine compartment and remove it. Install a new module and test your car to see if the issue has been resolved.
Step 5: Check the Fuel Pressure Regulator
If you’ve tried all of the above steps and are still experiencing issues with the P1236 error code, the problem may be with the fuel pressure regulator. This regulator is responsible for maintaining the correct fuel pressure in your car’s fuel system and can cause issues if it’s not working correctly. To check the regulator, use a fuel pressure gauge to measure the pressure in your car’s fuel system. If the pressure is too low, replace the regulator with a new one.
Conclusion
Fixing the P1236 error code can be a frustrating experience, but by following these steps, you can diagnose and fix the issue quickly and easily. Remember to check the fuel pump relay, inspect the fuel pump wiring, test the fuel pump, replace the fuel pump driver module, and check the fuel pressure regulator. With a little patience and some basic tools, you can get your car back on the road in no time.
FAQs
1. Can I drive my car with the P1236 error code?
It’s not recommended to drive your car with the P1236 error code, as it can cause your car to stall or not start at all. It’s best to diagnose and fix the issue as soon as possible.
2. How much does it cost to fix the P1236 error code?
The cost of fixing the P1236 error code can vary depending on the cause of the issue. In some cases, it may be a simple fix that only requires a new relay or wiring repair. In other cases, it may require a new fuel pump or fuel pump driver module, which can be more expensive.
3. Can I fix the P1236 error code myself?
If you have some basic mechanical knowledge and the right tools, you can fix the P1236 error code yourself. However, if you’re not comfortable working on your car’s fuel system, it’s best to take it to a professional mechanic.
