Fuel Trim Cylinder Balance Bank 2
Table of contents
P219B 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 P219B 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 P219B CADILLAC code
The cost of diagnosing the P219B 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
P219B CADILLAC Description
The air fuel imbalance monitor is designed to detect differences in the air fuel ratio between cylinders per engine bank. The test fails if the air fuel ratio difference per cylinder is greater than a calculated amount.