P1128moderate severityPowertrain
MAP Sensor Value Lower Than Expected
on 2016 Honda Pilot 3.5L V6 · AWD
What this code means
The MAP sensor reading is lower than expected for current conditions.
Symptoms
- CEL
- Poor performance
- Lean condition
- Hesitation
- Rough idle
Common causes
- Vacuum leak
- Faulty MAP sensor
- Clogged vacuum line
- Faulty PCM
Diagnostic steps
- Check for vacuum leaks
- Test MAP sensor
- Inspect vacuum line
- Compare readings
Repair notes
Fix vacuum leak or replace MAP sensor.
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