Fuel Trim Cylinder Balance Bank 1
Table of contents
P219A CADILLAC Possible Causes
- Leaking or contaminated fuel injectors
- Low fuel pressure or running out of fuel
- Leaking evaporative emission (EVAP) canister purge valve
- Exhaust or intake air system leaks
- Exhaust gas recirculation (EGR) system
- Positive crankcase ventilation (PCV) system is leaking or the valve is stuck open
- Ignition system
- Incorrectly seated engine oil dipstick, tube or oil fill cap
How do I fix code P219A CADILLAC?
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’s pins.
Tech Notes
- The fuel trim cylinder balance diagnostic is very sensitive to heated oxygen sensor (HO2S) design. A non-OE sensor or an incorrect part number may set a false DTC. Monitoring the misfire current counters, or misfire graph, may help to isolate the cylinder that is causing the condition.
Cost of diagnosing the P219A CADILLAC code
The cost of diagnosing the P219A CADILLAC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel Consumption
P219A CADILLAC Description
The Fuel Trim Cylinder Balance diagnostic detects a rich or lean cylinder to cylinder air/fuel ratio imbalance in each bank. The diagnostic monitors the pre-catalyst heated oxygen sensor (HO2S) signal’s frequency and amplitude characteristics by calculating an accumulated voltage over a predetermined sample period. An imbalance is indicated when multiple samples of the accumulated voltage are consistently higher than the desired value.