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Matt
Matt, Mechanical Engineer
Category: Volkswagen
Satisfied Customers: 21849
Experience:  BEng hons Mech engineering, in auto industry 22 years
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Should i have 12 volts Going to maf on 06 passat 1.9 also

Customer Question

Should i have 12 volts
Going to maf on 06 passat 1.9 also have 4.9 volts on 3 wires to map
Submitted: 10 months ago.
Category: Volkswagen
Expert:  Shantal-Mod replied 10 months ago.
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Expert:  Matt replied 10 months ago.

hello

the MAP sensor is a 5 v device so you should have a 5V +ve, a ground wire , and a signal wire

as you have probably worked out that fault code is showing an issue with that sensor

so I'd consider replacing it and also check the condition of the wiring to it

its also possible that the sensor is fine and the turbo is being a bit enthusiastic and overboosting

So check the small vacuum lines to the turbo and its connected control solenoid on the bulkhead, any cracks or leaks can give turbo issues

or the wastegate may be sticking

Expert:  Matt replied 10 months ago.

Hi

do you still need help?

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