[SOLVED] P120A Code: Fix Insufficient Flow In Secondary Fuel Injector Bank 1

If you see the Engine Light ON or the Service Engine Soon Warning Light, it could be due to the automobile fault code: p120a.

This code indicates a problem with the Secondary Fuel Injector Bank 1. The cause could be a faulty injector, an open or shorted harness, or a poor electrical connection in the circuit.

To fix this issue, you should visually inspect the wiring harness and connectors for any damage. Look out for broken, bent, pushed out, or corroded pins in the connectors. The repair time for this problem is estimated to be around 1.0 hour.

Make sure to check the “Possible Causes” listed above for a more accurate diagnosis.

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

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p120a fault code.

  • The symptoms of the automobile fault code P120A include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p120a can be caused by a faulty secondary fuel injector in Bank 1, an open or shorted harness, or a poor electrical connection in the circuit.

  • The fault code P120A can be caused by the following: 1.
  • Faulty Secondary Fuel Injector in Bank 1.
  • 2.
  • Open or shorted harness in the Secondary Fuel Injector Bank 1.
  • 3.
  • Poor electrical connection in the circuit of Secondary Fuel Injector Bank 1.

To fix the automobile fault code p120a, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p120a, follow these steps: 1.
  • Check the possible causes mentioned above.
  • 2.
  • Visually inspect the wiring harness and connectors related to the fault code.
  • 3.
  • Look for any damaged components.
  • 4.
  • Check for broken, bent, pushed out, or corroded pins in the connectors.
  • The estimated repair time for this fix is 1.0 hour.

The factors influencing the cost of diagnosing and fixing the automobile fault code p120a include the estimated repair time of 1.0 hour.

Most auto repair shops typically charge between $75 and $150 per hour for their services. These factors contribute to the overall cost of resolving the p120a fault code.

The P120A fault code refers to a problem with the Secondary Fuel Injector Bank 1.

The Powertrain Control Module (PCM) is responsible for monitoring this injector. When the injector does not meet the factory specifications, the PCM will set the P120A code.

This code specifically indicates that there is insufficient flow in the Secondary Fuel Injector Bank 1. It is important to address this issue promptly to ensure proper fuel delivery and engine performance.

What are the possible causes for the automobile fault code P120A?

If you see the engine light or service engine soon warning light on, the fault code P120A might be the culprit. This code is often caused by a faulty secondary fuel injector in bank 1, an open or shorted harness, or a poor electrical connection in the secondary fuel injector circuit. To fix this issue, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. Don’t forget to check the possible causes mentioned above for a comprehensive solution.

How can I visually inspect the wiring harness and connectors related to the secondary fuel injector bank 1?

If you’re dealing with an illuminated Engine Light or Service Engine Soon Warning Light, the culprit could be a faulty Secondary Fuel Injector Bank 1. To address this issue, start by visually inspecting the wiring harness and connectors associated with it. Look out for any damaged components and check for broken, bent, pushed out, or corroded pins on the connectors. This step is crucial in identifying any open or shorted circuits or poor electrical connections. Don’t forget to refer to the “Possible Causes” mentioned earlier for a comprehensive solution.

What should I look for when checking for damaged components or corroded connector pins to fix the P120A fault code?

When troubleshooting the P120A fault code, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. These issues can cause a poor electrical connection or an open or shorted circuit, leading to the faulty secondary fuel injector in Bank 1. By thoroughly examining these areas, you can identify and fix any problems that may be causing the engine light to turn on.

p120a error fault code explained

If you see the Engine Light ON or the Service Engine Soon Warning Light, it could be due to a faulty Secondary Fuel Injector in Bank 1.

To fix this, visually inspect the wiring harness and connectors, checking for any damage or corrosion. Look out for broken or bent pins on the connectors.

Scroll to Top