P0106 is a plausibility fault. The ECM gets a reading from the intake pressure sensor, but that reading doesn't match what it expects for the current RPM and throttle position. That is an important difference from a plain wiring fault, and it decides where you start looking.
What BRP says about P0106
The official BRP fault code list has eight wordings for P0106. Depending on the vehicle and engine control module, the plain-language text reads like this:
- Manifold air pressure or intake manifold air pressure not plausible
- Manifold absolute pressure temperature sensor (MAPTS): pressure too high
- T-MAP sensor or plenum pressure not plausible
- Manifold intake pressure sensor out of range
- Intake air pressure sensor functional problem
- Manifold air pressure sensor voltage not plausible
- Ambient pressure sensor not plausible
So on most modules it's about the intake pressure sensor, and on some it's the ambient pressure sensor. The plain-language text tells you which one when you read the code. For context, P0107 and P0108 in the BRP list stand for voltage too low and voltage too high, which points more toward electrical faults like a short to ground or an open circuit. P0106, on the other hand, more often means a reading that arrives fine electrically but doesn't make physical sense.
Common causes
- Intake leaks: loose clamps, cracked hoses, leaking joints. Pressure then behaves differently than expected.
- Dirty sensor: oil, salt or deposits on the sensor throw the reading off.
- Water or corrosion in the connector: always a suspect on a PWC.
- On supercharged engines: the text may refer to plenum pressure. Then the connections on the boost side belong on the check list too.
- Failed sensor.
The right check order
- Read and write down all codes. If P0107 or P0108 are stored too, check connectors and wiring first.
- Plausibility check in live data: key on, engine off. With the engine not running, intake pressure should be roughly the same as ambient pressure. If it's way off, suspect the sensor or its connection.
- Watch it at idle and when you blip the throttle: pressure should change in a way that follows the throttle. A value that sticks or jumps is a clear sign.
- Go over the intake side: clamps, hoses, seals and the sensor line, if there is one.
- Clean sensor and connector according to the manufacturer's instructions.
- Clear the code and record a test ride, watching intake pressure, throttle and RPM.
Reading and clearing P0106 with the app
With M-JET DIAGNOSTIC you read the fault memory over Bluetooth, no laptop needed. P0106 shows up in the plain-language wording for your module, with its status as active or stored. In live data you select intake pressure, intake temperature, throttle and RPM and record a test ride. For tips on reading those values, see real-time live data: temperature, voltage, RPM and boost pressure on the Rotax engine. Once the repair is done, clear the code right in the app.
Remember, clearing a code is not a repair. If the leak is still there, P0106 will be back.
When to take it to a shop
If you can't find a leak, the connector and sensor are clean, and the reading is still implausible, you need further testing, like a smoke test on the intake or a check of the boost side. A shop is also the right move if the Sea-Doo loses a lot of power or goes into limp mode. More on that in Sea-Doo limp mode: causes and how to fix it yourself.
Frequently asked questions
Does P0106 always mean a bad MAP sensor?
No. Since it's a plausibility fault, a leak or a dirty sensor is often behind it. Only replace the sensor once the intake side is sealed.
What is the difference between P0106, P0107 and P0108?
Per BRP, P0106 means not plausible. P0107 and P0108 mean voltage too low or too high, so more likely wiring, connectors or the sensor electronics.
Can I ride with P0106?
Short and easy rides, usually yes. But the ECM uses this pressure to calculate the mixture, so the engine may run worse or pull power.
