P016B
Generic code
Free on OBD DashX
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See which problems come with P016B, how often it shows up in other vehicles, and how to fix it — step by step.
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- How often it happens
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What P016B means
- Closed Loop Air/Fuel Ratio Control At Limit System Too Rich
Possible symptoms
- Check and clean the mass airflow sensor (MAF)
- Inspect and replace faulty oxygen sensor(s)
- Check and repair any vacuum leaks in the intake system
- Ensure proper fuel pressure and delivery from the fuel pump and injectors
- Inspect and replace a clogged or malfunctioning catalytic converter
Possible causes
- Faulty oxygen sensor
- Clogged or dirty fuel injectors
- Malfunctioning mass air flow sensor
- Vacuum leak in the intake manifold
- Faulty fuel pressure regulator
Possible solutions
- Decreased fuel efficiency
- Rough idle or stalling
- Check engine light illuminated
- Strong smell of fuel from exhaust
- Lack of power or hesitation during acceleration
Free on OBD DashX
P016B on OBD DashX
Real-world causes, how often this code shows up, and the fix — step by step.
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