• Check Engine Light is on
• Poor engine performance
• Increased fuel consumption
• Vacuum leak
• Faulty oxygen sensor
• Fuel injector issues
ECM: Engine Control Module
Oxygen Sensor: A sensor that measures the amount of oxygen in the exhaust gases
• P0171
• P0174
Your car is trying to mix air and fuel just right, but it's getting too much air and not enough fuel.
The engine control module (ECM) is unable to maintain the correct air/fuel ratio, and the system is running too lean.
The P016C code indicates that the ECM has detected that the air/fuel mixture is too lean, meaning there is too much air and not enough fuel in the combustion process. This can affect engine performance and emissions.
• Check for vacuum leaks
• Inspect oxygen sensors
• Test fuel injectors
• Repair any vacuum leaks
• Replace faulty oxygen sensors
• Clean or replace fuel injectors
• OBD-II scanner
• Vacuum gauge
• Multimeter
$100 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance checks
• Use quality fuel
• Inspect air intake system periodically
Engine Performance
• Do not ignore the Check Engine Light
• Get the vehicle inspected by a professional
• Keep up with regular maintenance
Check vehicle warranty for coverage on emissions-related components.
This code often appears in vehicles with high mileage or those that have not been regularly maintained.
Moderate – It should be addressed soon to avoid further engine performance issues.
Ignoring this code can lead to increased emissions, which may not comply with local environmental regulations.
• Engine at operating temperature
• Vehicle in closed-loop operation
The oxygen sensors are located in the exhaust system before and after the catalytic converter.
Q: Can I drive with a P016C code?
A: It's possible, but not recommended as it can lead to poor engine performance and increased emissions.
Q: Will a P016C code affect my fuel economy?
A: Yes, a lean condition can cause the engine to consume more fuel.