B1104 Engine Trouble Code
What is B1104?
With B1104, you may drive for several weeks with a malfunctioning MAF sensor, but expect decreased fuel economy and eventual stalling. Shop replacement costs $240–$400 depending on vehicle. The labour is straightforward, with most cost from the part itself.
Code Information
| Code Type: | OBD-II Body (B) Trouble Code |
| System: | Body |
| Code: | B1104 |
B1104 Symptoms
Check Engine Light
Illuminated dashboard warning
Engine Stalling
Engine stops unexpectedly or misfires
Performance Issues
Reduced power or acceleration
Starting Problems
Difficulty starting the engine
B1104 Code Structure
Understanding what each digit means in the B1104 body trouble code:
| B | 1 | 1 | 0 | 4 |
|---|---|---|---|---|
| Body Code | Fuel And Air Metering | Fuel Rail/System Pressure — Too High | Cold Start Injector 1 Malfunction | Timing Reference High Resolution Signal A Too Many Pulses |
How to Fix B1104
Diagnostic Steps:
Poor running symptoms align with MAP sensor malfunction. In some cases, a faulty MAP sensor will not trigger a code. The issue may represent separate wiring concerns requiring individual diagnosis.
Repair Solution:
Crankshaft position sensor signals the computer for precise ignition and fuel injection timing. Faulty sensors cause rough running and reduced efficiency. Modern vehicles enter limp mode and illuminate the check-engine light.
Technical Notes:
Parts or components should not be replaced based solely on B1104 DTC. Consult your vehicle service manual for proper diagnostic procedures, possible causes, and required testing before replacement.
B1104 Description
B1104 engine trouble code is related to Timing Reference High Resolution Signal A Too Many Pulses.
Main Cause
The primary reason for B1104 OBD-II Engine Trouble Code is: Fuel Rail/System Pressure — Too High.