[SOLVED] P2633 Code: Low Voltage Fuel Pump Relay – Fix Now!

The automobile fault code P2633 indicates a problem with the secondary fuel pump relay, which can cause the engine light to turn on. The possible causes of this issue include a faulty relay, an open or shorted harness, poor electrical connection, or a faulty engine control module. It is important to visually inspect the wiring harness and connectors for any damage or corrosion.

The repair time for this issue is estimated to be around 1.0. To interpret the fault code, it is recommended to check the “Possible Causes” listed above and look for any damaged components or connector pins.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

If you notice the Engine Light ON (or Service Engine Soon Warning Light), it could be due to the p2633 fault code.

Here are the symptoms to look out for:

  • The P2633 fault code in an automobile can cause several symptoms.
  • The most common symptom is the illumination of the engine light or service engine soon warning light.
  • Other symptoms include a decrease in engine power, poor acceleration, and reduced fuel efficiency.
  • The vehicle may also experience stalling or hesitation during acceleration.
  • Additionally, the transmission may shift roughly or erratically, and the vehicle may experience difficulty starting.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle.

The automobile fault code P2633 can be caused by a faulty relay, poor electrical connection, or a faulty ECM.

  • The automobile fault code P2633 can be caused by a faulty secondary fuel pump relay.
  • It can also be caused by an open or shorted secondary fuel pump relay harness.
  • Another cause can be a poor electrical connection in the secondary fuel pump relay circuit.
  • Lastly, a faulty engine control module (ECM) can also trigger this fault code.

To fix the p2633 fault code, check the possible causes and inspect the wiring harness and connectors for any damage or corrosion.

  • To fix the automobile fault code p2633, you need to check the possible causes listed above.
  • Visually inspect the related wiring harness and connectors.
  • Look for damaged components and broken, bent, pushed out, or corroded connector’s pins.
  • This fix will take an estimated repair time of 1.0 hour.

The automobile fault code P2633 can be diagnosed and fixed within an estimated repair time of 1.0 hour.

The cost of repair is influenced by the hourly rate charged by the auto repair shop, which typically ranges between $75 and $150 per hour. Therefore, the total cost of diagnosis and fixing the P2633 fault code will depend on the hourly rate charged by the auto repair shop and the estimated repair time.

The P2633 code is related to the fuel transfer pump relay control circuit.

The Engine Control Module (ECM) enables the secondary fuel pump relay when the primary fuel tank is below 50 liters. The fuel transfer pump relay applies power to the fuel transfer pump.

The control module monitors the voltage on the fuel transfer pump relay control circuit. If an incorrect voltage is detected, the P2633 code sets.

What are the possible causes of the automobile fault code P2633?

If you’re experiencing the engine light ON or Service Engine Soon Warning Light, the possible cause could be a faulty Secondary Fuel Pump Relay, an open or shorted Secondary Fuel Pump Relay harness, a poor electrical connection in the Secondary Fuel Pump Relay circuit, or a faulty Engine Control Module (ECM). To fix the issue, check the possible causes listed above, visually inspect the related wiring harness and connectors, and look for damaged components and broken, bent, pushed out, or corroded connector’s pins.

How can I fix the P2633 fault code in my automobile?

If you’re experiencing the P2633 fault code in your automobile, which is indicated by the Engine Light ON or Service Engine Soon Warning Light, it could be due to a faulty Secondary Fuel Pump Relay, an open or shorted Secondary Fuel Pump Relay harness, a poor electrical connection in the Secondary Fuel Pump Relay circuit, or a faulty Engine Control Module (ECM). To fix this issue, you should visually inspect the related wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

What should I visually inspect to troubleshoot the P2633 fault code?

If you’re experiencing the P2633 fault code, which is indicated by the engine light being on or the service engine soon warning light, there are a few things you can visually inspect to troubleshoot the issue. The possible causes include a faulty secondary fuel pump relay, an open or shorted secondary fuel pump relay harness, a poor electrical connection in the secondary fuel pump relay circuit, or a faulty engine control module (ECM). To fix the issue, check the possible causes listed above and visually inspect the related wiring harness and connectors for any damage or broken, bent, pushed out, or corroded pins.

p2633 error fault code explained

If your engine light is on, it could be due to a faulty secondary fuel pump relay, open or shorted harness, poor electrical connection, or a faulty ECM.

Check for these possible causes by visually inspecting the wiring harness and connectors for damage or corrosion.

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