The P1EFB fault code in automobiles indicates a problem with the battery charger system.

The most common symptom is the illumination of the engine light or service engine soon warning light. The cause of this issue could be a faulty battery charger, an open or shorted battery charger harness, or a poor electrical connection in the battery charger circuit.

It is important to address this issue promptly as it can lead to further damage to the vehicle’s electrical system.

The repair process involves visually inspecting the wiring harness and connectors, checking for damaged components, and looking for broken, bent, pushed out, or corroded connector pins.

The repair time for this issue is estimated to be around 1.0 hour.

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 a sign of p1efb fault code. Here are the symptoms to look out for:

  • The P1EFB fault code in automobiles can cause several symptoms, including the engine light turning on or the service engine soon warning light appearing.
  • Other symptoms may include reduced engine power, poor acceleration, rough idling, stalling, and decreased fuel efficiency.
  • Additionally, the vehicle may experience difficulty starting, and there may be a noticeable decrease in overall performance.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle and ensure safe driving conditions.

The P1EFB automobile fault code can be caused by a faulty battery charger, open or shorted harness, or poor electrical connection.

  • The automobile fault code P1EFB can be caused by a faulty battery charger.
  • It can also be caused by an open or shorted battery charger harness.
  • Additionally, a poor electrical connection in the battery charger circuit can also trigger this fault code.

To fix the p1efb automobile fault code, check the possible causes and inspect related wiring harness and connectors for damage.

  • To fix the automobile fault code p1efb, you need to check the possible causes listed above.
  • Visually inspect the related wiring harness and connectors for any damage.
  • Look for broken, bent, pushed out, or corroded connector’s pins.
  • Estimated repair time for this fix is 1.0 hour.

The automobile fault code P1EFB has an estimated repair time of 1.0 hour. The cost of fixing this fault code varies between $75 and $150 per hour, depending on the auto repair shop. The cost may also vary based on the severity of the issue and the type of repair required.

It is important to note that the cost of fixing this fault code may increase if additional issues are discovered during the repair process.

The P1EFB code is related to the hybridEV powertrain control module 2. It monitors the battery charger high-voltage output and current output.

The code indicates that the input current is too high for the battery charger high-voltage converter 2.

The battery charger operates in either a constant current mode or a constant voltage mode.

The diagnostic that will be run depends on the mode the battery charger is in.

The battery charger runs constant voltage mode at the beginning and end of the charge cycle and runs constant current mode most of the charging cycle.

What are the possible causes of the P1EFB automobile fault code?

If you see the engine light on or the service engine soon warning light, it could be due to the P1EFB fault code. This code is often caused by a faulty battery charger, an open or shorted battery charger harness, or a poor electrical connection in the battery charger circuit. To fix this issue, you should visually inspect the wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector pins.

How can I visually inspect the wiring harness and connectors related to the P1EFB fault code?

If you’re experiencing an Engine Light ON or Service Engine Soon Warning Light due to the P1EFB fault code, it may be caused by a faulty Battery Charger, open or shorted Battery Charger harness, or poor electrical connection in the Battery Charger circuit. To fix this issue, check the possible causes listed above and visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector’s pins.

What should I look for when checking for damaged components and corroded connector pins related to the P1EFB fault code?

If you’re experiencing the P1EFB fault code, which is indicated by the engine light or service engine soon warning light turning on, you should check for a faulty battery charger, an open or shorted battery charger harness, or a poor electrical connection in the battery charger circuit. To fix this issue, visually inspect the wiring harness and connectors, and check for damaged components. Look for broken, bent, pushed out, or corroded connector pins.

p1efb error fault code explained

If your engine light is on, it could be due to a faulty battery charger, open or shorted harness, or poor electrical connection.

To fix it, visually inspect the wiring harness and connectors for damage or corrosion. Check for broken, bent, or pushed out pins.

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