Engine-Codes - Generic - P120B

P120B Code - Secondary Fuel Injector Bank 1 Excessive Flow

- Code Popularity: 4,293 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC P120B?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Secondary Fuel Injector Bank 1
  • Secondary Fuel Injector Bank 1 harness is open or shorted
  • Secondary Fuel Injector Bank 1 circuit poor electrical connection
⚠ Does your Car have Safety Recalls? → Check here

How to Fix the DTC P120B?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Search for P120B Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P120B code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P120B Code Mean?

The Powertrain Control Module (PCM) monitors the Secondary Fuel Injector Bank 1. The PCM sets the OBDII code when the Secondary Fuel Injector Bank 1 is not to factory specifications.

P120B Code - Secondary Fuel Injector Bank 1 Excessive Flow

Need more Information on the Code?

Need more information on how to fix the P120B code? Get Access to Factory Service Manuals

Code P120B Information for Specific Makes

  • P120B Ford Secondary Fuel Injector Bank 1 Excessive Flow

Need Help with the Code?

Get the P120B code diagnosed by a professional: Find a repair shop in your area