P120D
Secondary Fuel Injector Bank 2 Excessive Flow
P120D is an OBD-II diagnostic trouble code meaning: Secondary Fuel Injector Bank 2 Excessive Flow . Common causes: bank 2 secondary injector malfunction, problems with the injector electrical circuit. Estimated repair cost: $17–56.
Symptoms
- Unstable engine operation
- Increased fuel consumption
- Problems starting the engine
- Check Engine light comes on
- Increased emissions of harmful substances
Causes
- Bank 2 secondary injector malfunction
- Problems with the injector electrical circuit
- Incorrect signals from the ECU
- Dirty or clogged injector
- Malfunction of the fuel pump or pressure regulator
How to Fix
- Check the condition of the secondary injector of bank 2
- Diagnose the injector electrical circuit
- Check signals from the ECU
- Clean or replace the injector if necessary
- Check the operation of the fuel pump and pressure regulator
Related codes
FAQ
What does the P120D code mean?
P120D is an OBD-II diagnostic trouble code that indicates: Secondary Fuel Injector Bank 2 Excessive Flow
What causes a P120D error code?
The most common causes of P120D include: Bank 2 secondary injector malfunction; Problems with the injector electrical circuit; Incorrect signals from the ECU; Dirty or clogged injector.
How do I fix a P120D diagnostic trouble code?
To fix P120D: Check the condition of the secondary injector of bank 2. Diagnose the injector electrical circuit. Check signals from the ECU. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P120D?
Yes, but get it checked soon
How much does it cost to fix P120D?
The estimated repair cost for P120D is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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