P0106 means the MAP (Manifold Absolute Pressure) sensor is sending readings outside the expected range for current engine operating conditions. The ECU uses MAP sensor data to calculate air density and determine fuel delivery, so incorrect readings directly cause poor engine performance and reduced efficiency.
DTC/P0106·Opel
P0106 on Opel: Causes, Symptoms and Fix Cost
Quick Answer
Moderate SeveritySafe to drive (short-term)Opel
P0106 on a Opel means the MAP (Manifold Absolute Pressure) sensor is sending readings outside the expected range for current engine operating conditions. The ECU uses MAP sensor data to calculate air density and determine fuel delivery, so incorrect readings directly cause poor engine performance and reduced efficiency.
Repair cost on Opel€18 - €252
What does P0106 mean on a Opel?
Opel Astra
2004-2024The 1.6L and 1.4L turbo engines (A16LET, A14NET) commonly trigger P0106 from vacuum hose deterioration. The MAP sensor is integrated into the intake manifold on some models, making it harder to access. Check the small-diameter vacuum lines first.
What causes P0106 on a Opel?
Beyond the generic causes listed on the main P0106 page, these are the Opel-specific patterns we see most often:
Opel AstraDeteriorated vacuum hoses on 1.4T/1.6T engines
Opel AstraMAP sensor failure from heat exposure on integrated units
How to diagnose P0106 on a Opel with OBD2
Follow these steps to pinpoint the root cause of P0106:
- With the engine off and ignition on, read the MAP sensor value with a scan tool. At sea level, it should read approximately 100 kPa (atmospheric pressure). A significantly different reading suggests a faulty sensor
- Start the engine and observe MAP readings at idle. Typical idle readings are 25-45 kPa. If the reading stays near 100 kPa, check for a disconnected or cracked vacuum hose
- Inspect the vacuum hose from the intake manifold to the MAP sensor. Look for cracks, kinks, or disconnections. Replace if damaged
- Remove the MAP sensor and inspect the sensing port for carbon buildup. Clean with electrical contact cleaner if needed
- Check the MAP sensor wiring and connector for corrosion, moisture, or damage. Repair any wiring issues found
- If the sensor, hose, and wiring are all good, perform a smoke test to check for vacuum leaks elsewhere in the intake system
How much does P0106 cost to fix on a Opel? (EUR)
Estimated repair costs on a Opel (Opel parts and labour typically run 10% below the average for this code).
Prices estimated as of May 2026. Costs vary by region, vehicle, and shop.
Related codes that often appear with P0106 on Opel
These codes commonly cluster with P0106 on Opel vehicles:
FAQ: P0106 on Opel
What does P0106 mean?
P0106 means the MAP sensor is providing readings that do not match expected values for the current engine speed and throttle position. The sensor measures intake manifold vacuum to help the ECU calculate how much fuel to inject.
Can I clean a MAP sensor instead of replacing it?
Yes. Remove the sensor and spray the tip with electrical contact cleaner or MAF sensor cleaner. Let it dry completely before reinstalling. If the readings normalise after cleaning, the sensor may not need replacement.
How do I test a MAP sensor?
With the ignition on and engine off, the MAP sensor should read approximately 100 kPa (atmospheric pressure). At idle, it should drop to 25-45 kPa. You can also apply vacuum with a hand pump and watch the voltage change smoothly from about 4.5V to 0.5V.
Can a vacuum leak cause P0106?
Yes. A vacuum leak allows unmetered air into the intake manifold, changing the pressure that the MAP sensor reads. This creates a mismatch between the expected and actual MAP readings, triggering P0106. Fix the leak to resolve the code.
Looking for the full P0106 reference (all makes, full diagnosis flow, complete repair cost matrix)?
See the main P0106 guideSkanyx · Opel
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