P0106 on Mazda: How to Diagnose & Fix
MAP/Barometric Pressure Circuit Range/Performance
1 Mazda model · 1 documented issue · 1 critical
P0106 on Mazda by model: symptoms, diagnosis and fix
The 2.2 SKYACTIV-D runs two EGR valves and recirculates exhaust gas aggressively to meet emissions targets. Soot from that recirculated gas bakes onto the intake shutter valve, the intake manifold runners and the EGR passages; owners have found manifolds and EGR valves 80 percent blocked. Once the shutter valve sticks, airflow control is lost - power falls off progressively, multiple dash warnings appear, and the engine can stall with no restart. Mazda Australia recalled 35,476 diesel Mazda3 (2014-2016), Mazda6 (2012-2018) and CX-5 (2012-2018) vehicles specifically over carbon deposits in the intake shutter valve causing premature wear of engine components, with stated symptoms including increased stopping distance and smoke from the engine bay. The clogged manifold also buries the MAP sensor port, which is the near-universal cause of P0106 on this engine.
Common Symptoms
- Gradual loss of engine power
- Multiple warning lights on the dashboard
- Engine stalls and will not restart
- Smoke from the engine compartment
- Increased braking distance
- Rough idle and hesitation under load
How to Fix
Check whether your VIN falls under the diesel carbon-deposit campaign in your market - in Australia the remedy was performed free of charge. Otherwise the repair is mechanical: remove and chemically clean or replace the intake shutter valve, decarbon the intake manifold and EGR valves and cooler, and clean or replace the MAP sensor. Updated ECU calibration reduces recurrence. Prevention is driving pattern - the engine needs regular sustained hot running, not exclusively short urban trips. A P0106 with no other fault on this engine almost always means a soot-blocked MAP port, not a failed sensor.
Sources for this issue (3)
P0106 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0106 mean on a Mazda?
P0106 stands for "MAP/Barometric Pressure Circuit Range/Performance." P0106 means the manifold absolute pressure (MAP) or barometric pressure sensor signal is out of the expected range or not matching engine operating conditions (range/performance). The MAP sensor measures intake manifold pressure/vacuum, which the computer uses to gauge engine load and calculate the correct fuel and ignition timing. When the reading is implausible — too steady, not tracking throttle changes, or inconsistent with other sensors — the computer flags this code. Symptoms often include rough idle, hesitation, poor fuel economy, or a lack of power, and the cause may be the sensor, a vacuum leak, or wiring. On Mazda it is documented across 1 model: CX-5.
What are the most common causes of P0106?
The most common causes of P0106 are: Faulty MAP sensor, Vacuum leak or disconnected/cracked vacuum line to the sensor, Clogged or restricted MAP sensor port, Wiring or connector problems in the sensor circuit, Intake manifold leak affecting pressure readings, Restricted air intake or exhaust affecting manifold pressure, Poor ground or reference voltage to the sensor. The specific cause varies by vehicle.
How much does it cost to fix P0106 on a Mazda?
Repair costs vary widely with the root cause and Mazda model; each issue on this page carries its own estimate where one is published.
Looking for P0106 on a different make?
View P0106 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.