Powertrain, generic · Fuel and air metering, auxiliary emission controls
P00B8 MAP - Mass or Volume Air Flow Correlation Bank 2
Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo
On engines with two intake paths, the control module compares the manifold pressure of bank 2 with the measured or calculated air quantity of that bank. P00B8 is set when the two do not fit together; the code does not say which value is wrong. As with its bank 1 counterpart, typical causes are an air leak, an exhaust gas recirculation valve that does not close, or a dirty or drifting sensor. Each sensor can be electrically fine on its own. No manufacturer description naming this exact code was found; the explanation follows its documented counterpart.
Likely causes
Air leak in the intake of bank 2
EGR valve dirty or sticking open
Manifold pressure sensor or air flow meter dirty or drifting
Wiring or connector faulty
Symptoms
- Check engine light on
- Rough running
- Mixture codes possible
Repair estimate
DifficultyMediumDIY possible
Parts and labour€50–400
Time0.5–2 h
Typical range across vehicles; the real cost depends on what the testing finds.
Parts involved
manifold absolute pressure sensormass air flow sensoregr valveintake manifold
Related codes
References: law.cornell.edu, static.nhtsa.gov, en.wikipedia.org.