[SOLVED] P2634 Code: High Voltage Fuel Pump Relay – Fix Now!

The automobile fault code P2634 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 connections, or a faulty engine control module. To fix the problem, one should 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. It is important to address this issue promptly to avoid any further damage to the vehicle. To interpret the fault code, one should consult the vehicle’s manual or seek assistance from a professional mechanic.

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 p2634 fault code.

Here are the symptoms to look out for:

  • The P2634 fault code in an automobile can cause several symptoms, including the engine light turning on or the service engine soon warning light appearing.
  • Other symptoms may include a decrease in engine power, reduced fuel efficiency, and difficulty shifting gears.
  • Additionally, the vehicle may experience stalling or hesitation during acceleration, and the transmission may fail to engage properly.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle and ensure safe driving conditions.

The automobile fault code P2634 can be caused by a faulty relay, poor electrical connection, or a faulty ECM.

  • The automobile fault code P2634 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.
  • Poor electrical connection in the secondary fuel pump relay circuit can also trigger this fault code.
  • Lastly, a faulty engine control module (ECM) can also be a cause of the P2634 fault code.

To fix the automobile fault code p2634, check the possible causes and inspect the related wiring harness and connectors for any damage or corrosion.

  • To fix the automobile fault code p2634, you need to check the possible causes listed above.
  • Visually inspect the related wiring harness and connectors.
  • Look for damaged components and check for 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 P2634 refers to the Torque Management Feedback Signal ‘A’ RangePerformance.

The estimated repair time for this fault code is 1.0 hour.

The cost of fixing this fault code is dependent on the hourly rate charged by the auto repair shop. The average hourly rate charged by most auto repair shops is between $75 and $150. Therefore, the cost of fixing the P2634 fault code can range from $75 to $150.

The P2634 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 approximately 50 liters (13.2 gallons). 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 the control module detects an incorrect voltage on the fuel transfer pump relay control circuit, the P2634 code sets.

What are the possible causes of the automobile fault code P2634?

If you’re experiencing the engine light ON or Service Engine Soon Warning Light with the fault code P2634, 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, 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 one visually inspect the related wiring harness and connectors to fix the P2634 fault code?

If you’re experiencing the P2634 fault code, which is indicated by the engine light being on or the service engine soon warning light, there are a few possible causes. These 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, start by visually inspecting the related wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins.

Is a faulty Engine Control Module (ECM) a common cause of the P2634 fault code?

While a faulty Engine Control Module (ECM) is listed as a possible cause of the P2634 fault code, it is not a common cause. The most common cause is a faulty Secondary Fuel Pump Relay or issues with its harness or circuit connection. To fix the issue, one should visually inspect the related wiring harness and connectors, checking for damaged components and broken or corroded pins.

p2634 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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