All codes
Mass or Volume Air Flow B Circuit Range/Performance
P010B means the second MAF signal does not agree with the expected air flow for the current operating conditions. Learn what to check before replacing parts.
What you may notice
Symptoms
- 01Warning light may illuminate
- 02Intermittent or implausible scan data
- 03Vehicle-specific symptoms may vary
Where to look first
Common causes
- 01A contaminated sensor, unmetered air through an intake leak, or a loose air duct can produce an implausible reading.
- 02Wiring, connector, or ground fault
- 03Vehicle-specific mechanical or control issue
A sensible sequence
Best diagnostic order
- 01Save codes and freeze-frame information
- 02Compare both MAF readings with each other and with engine load, then inspect the intake duct and electrical connection.
- 03Confirm readings with vehicle-specific specifications
- 04Verify the repair under the conditions that set the code
Step by step
What to check and repair
- 01Compare both MAF readings with each other and with engine load, then inspect the intake duct and electrical connection.
- 02Repair only the verified cause and retest
Read the signals
Live-data clues
Related sensor or switch signal
- Typical behavior
- Plausible and consistent with the operating condition
- Possible clue
- An unexpected value or dropout helps localize the fault
| Parameter | Typical behavior | What it can suggest |
|---|---|---|
| Related sensor or switch signal | Plausible and consistent with the operating condition | An unexpected value or dropout helps localize the fault |
What P010B means
The second MAF signal does not agree with the expected air flow for the current operating conditions. The code identifies an observed condition; it does not prove which part needs replacement.
Diagnostic direction
Compare both MAF readings with each other and with engine load, then inspect the intake duct and electrical connection.
Before clearing the code
Save stored and pending codes and freeze-frame data. Use service information for the exact vehicle before repair, then confirm the issue no longer returns.