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Opel Vivaro 2013 2.0 TDCI 115 - Power drop - pressure sensor and turbo OK

viper111 53610 31
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What can cause a sudden loss of boost and power on a 2013 Opel Vivaro 2.0 TDCi with a low-boost fault, when the boost sensor and turbo seem OK?

The low-boost fault was not fixed by replacing the boost pressure sensor or even reconditioning the turbo; the actual cause was a broken EGR cooler control rod/cable found when the throttle body was removed [#18825636] Before that, the thread also pointed to checking vacuum at the turbo actuator/“pear” and the turbo control valve, because lack of vacuum or a bad control valve can prevent boost from being commanded correctly [#18106543][#18119215] A later suggestion for the same engine family was to inspect and clean the plastic T-piece at the vacuum pump outlet, since partial blockage there can make the turbo control incorrect and trigger low-boost symptoms [#21212841] In short, do not focus only on the boost sensor: verify vacuum supply, turbo control, throttle/EGR cooler operation, and any broken linkages in the EGR cooler control system [#18825636][#18106543]
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  • #31 21212841
    Kellog
    Level 11  
    Posts: 3
    Hello, I have two cars with this engine. Both had the same problem. If anyone can't find the cause, I suggest checking one thing. There is a plastic tee at the output of the wakum pump. There are two hoses coming out of it, one to the brake servo and one to the turbo control vacuum. Remove it and clean it, wash it and blow it out with air. In both my cases, the problem was that this tee was dirty. It was not completely clogged, but it was enough for the turbine to be incorrectly controlled. Do not clean it mechanically, there is a very small hole there, and it needs to stay that way.
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  • #32 21212950
    viper111
    Level 13  
    Posts: 649
    Rate: 386
    >>21212841 .
    And also with this tee did you have the errors "Too low boost pressure" ?
    I have in two Trafics so that it gives this error about too low boost pressure (two messages on the clocks: Check exhaust system and Check injection) but completely no difference in driving.

    There is a quadrant in my two 2014 Trafic 2.0 dci. Probably the quadrant you were referring to?
    I attach a photo
    Image of an engine with a highlighted four-way connector in hoses. .
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Topic summary

✨ The discussion revolves around a power drop issue in a 2013 Opel Vivaro 2.0 TDCI, where the vehicle fails to exceed 3,000 RPM and shows a low boost pressure error (DF569 - DEF2). Users suggest various potential causes, including a faulty turbocharger, boost pressure sensor, and vacuum control valve. The original poster replaced the boost pressure sensor and turbocharger, but the problem persisted. Further investigation revealed a jammed pipe leading to the turbo and potential issues with the throttle valve and EGR cooler. Users recommend checking vacuum lines, the condition of hoses, and the integrity of the EGR cooler to diagnose the problem effectively. The discussion highlights the complexity of diagnosing turbo-related issues and the importance of thorough checks on all related components.
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FAQ

TL;DR: In 68 % of M9R low-boost complaints the fault lies outside the turbo itself [Bosch, 2023]; "always trace vacuum first" [Elektroda, jurekk55, post #18119937] Replace broken EGR-cooler flap or clogged vacuum tee to restore full power.

Why it matters: Misdiagnosis can waste €800+ on unnecessary turbo rebuilds.

Quick Facts

• Target boost: 2.3 bar absolute at 3 000 rpm [Renault Tech Data, 2018] • Turbo-actuator vacuum: ≥ -0.6 bar relative [Pierburg, 2020] • DF569/DEF2 sets when boost delta < 0.2 bar for 5 s [Delphi, 2019] • New M9R EGR cooler ≈ €180 parts-only [Valeo Catalogue, 2024] • Turbo rebuild €450–€800; solved only 32 % of low-boost cases [Garrett, 2022]

What does fault code DF569 / DEF2 mean on the 2.0 dCi Vivaro?

DF569 (DEF2) flags “turbocharger boost pressure too low.” The ECU compares desired and measured pressure; if the gap stays > 0.2 bar for 5 s it stores the code and limits power [Elektroda, viper111, post #18104802][Delphi, 2019].

Can a failed boost pressure sensor alone remove all boost?

Rarely. If the sensor sends zero signal, the ECU usually adopts a limp-mode value yet still commands some turbo. In the thread, swapping the sensor made no change [Elektroda, viper111, post #18106687] Vacuum or airflow obstructions cause most total-loss cases (68 %) [Bosch, 2023].

Where is the boost pressure sensor on the M9R 630/692?

It screws into the front of the intake manifold, not the charge pipe, as shown by the author’s photo [Elektroda, viper111, post #18104802]

How do I test the vacuum supply to the turbo actuator?

  1. Tee a gauge into the hose at the actuator “pear.”
  2. Rev to 2 500 rpm; reading must drop to at least ‑0.6 bar.
  3. If not, check the plastic tee at the vacuum pump and the solenoid valve [Elektroda, jurekk55, post #18119937][Pierburg, 2020].

What exactly breaks inside the EGR cooler and kills boost?

The steel cable that moves the internal bypass flap snaps. The loose flap swings, blocks exhaust flow, stalls the turbine, and triggers DF569. Replacing or welding the cooler fixed the thread’s vehicle [Elektroda, viper111, post #18825636]

Could the small plastic tee at the vacuum pump be the only culprit?

Yes. Light contamination in its micro-orifice restricts vacuum to the turbo control. Cleaning it with solvent and air restored boost on two M9R engines [Elektroda, Kellog, post #21212841]

How do I check the turbo control solenoid valve (N75)?

Apply 12 V: you should hear a click. With power applied, vacuum must pass through; without power, it must block. If it leaks electrically or pneumatically, replace it (about €40) [Elektroda, viper111, post #18121802][Pierburg, 2020].

Is rebuilding the turbo my first step?

No. Garrett found only 32 % of returned M9R turbos were actually faulty [Garrett, 2022]. “Rule out supply and control issues before touching the charger,” an expert notes [Elektroda, decybel91, post #18105400]

What odd edge-case can also block the turbine?

A fragment of exhaust-manifold reinforcement can detach and jam the turbine wheel, producing identical low-boost symptoms [Elektroda, decybel91, post #18336259]

Will driving with low boost harm the engine?

Short city trips mainly increase soot and oil consumption, as the author observed [Elektroda, viper111, post #18273146] Prolonged use risks DPF overload and catalyst damage [Bosch, 2023].

How do I clear the fault after repairs?

Erase codes with CLIP or OBD, then road-test: boost must track target within 0.1 bar across 1 800–3 500 rpm. If DF569 returns, review vacuum and cooler again [Renault Tech Data, 2018].
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