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Astra 1.7 CDTI Error P0105: MAP and BBT Functionality and Incorrect Installation

Bobasy 38919 16
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How can I identify the crooked part near the air filter, and could its wrong installation be causing P0105 on an Astra 1.7 CDTI?

The crooked part is a vacuum actuator for the intake-manifold swirl/flap system, not the turbo, and P0105 points to the MAP (manifold absolute pressure) sensor rather than that actuator [#17184047] [#17184270] Do not trust the auction description; the part is a vacuum control element for the intake manifold flaps [#17184047] [#17184270] For P0105, start by cleaning the sensor and rinsing it in petrol or solvent, and only replace it if cleaning does not help [#17185223]
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  • #1 17182797
    Bobasy
    Level 12  
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    Welcome.
    Daughter bought astra, it turned out she has error P0105.
    I sprayed MAP and BBT (it's just behind the air filter) with an EGR spray. Has dried up and works.
    But when folding it turned out that the previous owner, exchanging MAP, folded something wrong, because part in the photo was attached at an angle. shoved it under this other part, screwing it crookedly maybe it was not working as it should
    What is that photo?
    Thank you :-)
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    • Astra 1.7 CDTI Error P0105: MAP and BBT Functionality and Incorrect Installation DSC_0221.JPG (3.34 MB) You must be logged in to download this attachment.
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    #2 17183212
    DriverMSG
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    The so-called. Vacuum turbine pear.
    Vacuum turbine regulator.
  • #3 17183239
    szymitsu21
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    DriverMSG wrote:
    The so-called. Vacuum turbine pear.
    Vacuum turbine regulator.


    Are you sure ? I would sooner say flaps or a fire extinguishing flap ... put a little plastic spin on the turbine :D
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  • #4 17183275
    leonov
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    szymitsu21 wrote:
    I would sooner say flaps or a fire damper
    You're wrong ;-) , colleague above is right :-)
  • #5 17183279
    szymitsu21
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    leonov wrote:
    szymitsu21 wrote:
    I would sooner say flaps or a fire damper
    You're wrong ;-) , colleague above is right :-)


    That's why I'm asking, I wasn't sure at all ;)
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  • #6 17183715
    Bobasy
    Level 12  
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    Vacuum turbine regulator mounted at an angle, on the base about 3mm can get stuck? What could potentially affect him and the engine and turbine?

    DriverMSG Thank you :-)
  • #7 17184047
    DriverMSG
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    szymitsu21 wrote:
    Are you sure ? I would sooner say flaps or a fire extinguishing flap ... put a little plastic spin on the turbine
    It is not connected directly to the turbine, and the Polish name was given as described by the sellers.

    On other websites it also has strange names like:
    Vacum BOX, Unterdruckdose AGR ansaugbrücke etc.
    It is a vacuum turbine control element.
    Factory part number 97328166.
  • #8 17184069
    Bobasy
    Level 12  
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    Or actor :-)
  • #9 17184270
    tzok
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    Do not follow the description from the auction, it has nothing to do with the turbine, it is a vacuum adjusting fire dampers in the intake manifold.
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  • #10 17184318
    szymitsu21
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    tzok wrote:
    Do not follow the description from the auction, it has nothing to do with the turbine, it is a vacuum adjusting fire dampers in the intake manifold.


    I told you .... they didn't believe me.
  • #11 17184748
    Bobasy
    Level 12  
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    What is his role? I am begging you in Polish to understand something.
    Could this be the cause (prophylactic question) of the fault she has thrown

    P0105, "Manifold absolute pressure / atmospheric pressure sensor - malfunction"

    Taken from https://www.elektroda.pl/rtvforum/topic1958130.html#9340594. :)
  • #13 17184983
    Bobasy
    Level 12  
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    I read this article. Except for my understanding of the world, it's kamikaze knowledge. Rectifier from Lidl connected to the battery in the car. As far as I know, these chargers finish charging the battery dedicated for the battery, which the car does not have to experience well or not at all.
    But + for honesty for a friend from Olsztyn.
    I will order the sensor, but I am not tempted by such measurements ;-)
  • #14 17185223
    DriverMSG
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    Bobasy wrote:
    I will order the sensor, but I am not tempted by such measurements
    To begin with, clean the sensor, rinse it in petrol or solvent. If this does not help, it is only then exchange.
  • #15 17185250
    Bobasy
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    I cleaned and started with it.

    How much time, kilometers does such a detector live?
  • #16 17185253
    DriverMSG
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    Bobasy wrote:
    How much time, kilometers does such a detector live?
    There are no limits and no expiry date.
  • #17 17197410
    Bobasy
    Level 12  
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    After today's visit to the mechanic, I am richer with experience, although it is not entirely :-)
    Out of curiosity and willingness to meet local mechanics.

    Today's checked sensors and nothing. He kept digging. Until he made a diagnosis that it was a clogged catalyst and thus needed replacement.
    And yesterday another mechanic confirmed that it is dual mass and repair is too expensive to carry out.
    The car doesn't know if it has a double weight. I don't know if the condition of the engine will be correct after cleaning or replacing the catalyst.
    I don't know about these mechanics.
    I am open to suggestions about the car. The map sensor will be replaced on Saturday.
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Topic summary

✨ The discussion revolves around a P0105 error code in an Astra 1.7 CDTI, which indicates a malfunction in the manifold absolute pressure (MAP) sensor. The user reported that the MAP and a component referred to as the vacuum turbine regulator were improperly installed, leading to potential issues. Various participants debated the correct terminology for the component and its function, confirming it is related to the intake manifold's vacuum control. Suggestions included cleaning the sensor and considering replacement if issues persist. Ultimately, the user learned that the problem might also stem from a clogged catalyst, necessitating further repairs.
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FAQ

TL;DR: Astra 1.7 CDTI P0105 flags the MAP/Baro circuit; "Vacum BOX…ansaugbrücke" and part 97328166 identify the vacuum actuator; check mounting and MAP wiring. [Elektroda, DriverMSG, post #17184047]

Why it matters: This FAQ helps Astra H 1.7 CDTI owners quickly diagnose P0105, avoid turbo-related mislabels, and fix MAP faults without guesswork.

Quick Facts

What does error P0105 mean on my Astra 1.7 CDTI?

P0105 indicates a Manifold Absolute Pressure/Barometric Pressure sensor malfunction. The ECU sees an invalid MAP/Baro signal or circuit fault. Prioritize the MAP sensor, its wiring, and the connector. Clear codes after each intervention to confirm the fix. [Elektroda, Bobasy, post #17184748]

What is the vacuum ‘pear’ in the photo, and what does it control?

It is the vacuum actuator for the intake manifold shutoff flaps (often called fire-damper/anti‑shudder flaps). As one expert put it, “nothing to do with the turbine.” It modulates flap position via vacuum to manage airflow during shutdown or specific operating states. [Elektroda, tzok, post #17184270]

Why do listings call it a ‘vacuum turbine regulator’ or Vacum BOX?

Sellers mislabel it. The part is an intake-flap vacuum actuator. You’ll see names like “Vacum BOX” and “Unterdruckdose AGR ansaugbrücke.” Reference the factory number to avoid confusion: “Factory part number 97328166.” That ensures you order the right unit. [Elektroda, DriverMSG, post #17184047]

Can mounting that actuator at an angle cause issues?

Yes. A skewed mount can impede actuator travel or linkage motion. One user reported about a 3 mm tilt. Re-seat it flush on its base and verify the rod moves freely through the full stroke. Correct alignment maintains consistent flap operation. [Elektroda, Bobasy, post #17183715]

Could that actuator be the reason for P0105?

Treat P0105 as a MAP/Baro circuit problem first. Clean the MAP, check the connector, and only then consider replacement. Intake-flap actuator issues affect airflow, but your first diagnostic path is the MAP sensor and wiring. “To begin with, clean the sensor…” [Elektroda, DriverMSG, post #17185223]

How do I clean the MAP sensor safely?

Follow three steps:
  1. Disconnect the connector; remove the MAP from the manifold.
  2. Rinse the sensing tip in petrol or solvent; let it dry fully.
  3. Refit, clear codes, and road-test; replace only if faults persist. “Clean the sensor, rinse it in petrol or solvent.” [Elektroda, DriverMSG, post #17185223]

Is using EGR spray on MAP/BBT worth trying?

A user reported spraying the MAP and a nearby sensor with EGR cleaner, letting them dry, and restoring operation. Use electronics-safe practices and ensure components are completely dry before starting. If the code returns, proceed with deeper MAP diagnostics. [Elektroda, Bobasy, post #17182797]

How long should a MAP sensor last on this engine?

There is no set lifetime or mileage limit. MAP sensors fail from contamination, oil mist, moisture, or physical damage. If cleaning restores correct readings, you can continue using it. Replace only when cleaning and wiring checks do not resolve P0105. [Elektroda, DriverMSG, post #17185253]

What part number should I order for that actuator?

Use factory part number 97328166 when sourcing the vacuum actuator. Cross-check listings that use names like “Vacum BOX” or “Unterdruckdose AGR ansaugbrücke” to ensure you get the correct intake-flap unit. [Elektroda, DriverMSG, post #17184047]

My mechanic says the catalyst is clogged or the DMF is bad. Does that explain P0105?

Those faults can hurt drivability, but P0105 points to a MAP/Baro circuit issue. The thread shows mechanics proposing clogged catalyst or dual‑mass problems, yet the owner focused on the MAP. Confirm P0105 root cause before expensive replacements. [Elektroda, Bobasy, post #17197410]

What other names do people use for this intake flap device?

Community members called it “flaps” or a “fire extinguishing flap.” It’s the same intake shutoff/flap assembly operated by vacuum. These terms arise from its role in damping air during shutdown and managing intake flow. [Elektroda, szymitsu21, post #17183239]

Where can I find a step‑by‑step P0105 diagnostic guide?

See the guide linked by the contributor for MAP diagnosis on this platform. It outlines practical checks for the MAP circuit and supporting components. Use it alongside the clean‑first approach noted above. [Elektroda, DriverMSG, post #17184967]
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