2010 Range Rover 5.0 HSE P0106: Do You Have 1 or 2 MAP Sensors?
Do You Really Have Two MAP Sensors?
O’Reilly’s info isn’t quite right, though the confusion is understandable. Your 2010 Range Rover 5.0 HSE has one primary manifold absolute pressure (MAP) sensor, located behind the throttle body. What O’Reilly was likely describing as a second sensor is actually a different component—possibly a barometric pressure sensor or other intake-related sensor—not a second MAP sensor that needs replacing for a P0106 code.
What P0106 Actually Means
The P0106 diagnostic trouble code indicates a “MAP Sensor Performance Problem.” The MAP sensor measures intake manifold pressure to help your engine’s computer adjust fuel delivery and ignition timing. When the sensor signal falls outside the expected range, the check engine light triggers.
This code doesn’t tell you which component is actually failing—it just tells you the ECU detected abnormal MAP pressure readings.
Why You Might Have Confusion About Two Sensors
Range Rover forums often discuss multiple pressure-related sensors in the intake system. Some confusion arises because:
- There is one primary MAP sensor (the Intermotor AS419 or equivalent) on the intake manifold area
- There may be a BARO sensor or other auxiliary sensor in the intake system, but this is separate from the MAP
- Supercharged models have additional sensors for boost monitoring, but the 2010 HSE non-supercharged model does not
For a P0106 code, you’re diagnosing and replacing the primary MAP sensor—not multiple sensors.
Common Causes of P0106 on the 5.0L V8
Before you buy sensors, check these first:
- Vacuum leak: A crack in vacuum lines feeding the sensor will cause false pressure readings. This is one of the most common causes and much cheaper to fix than a sensor replacement.
- Dirty or failed MAP sensor: Carbon buildup or electrical failure in the sensor itself.
- Wiring or connector issues: Corrosion, loose connections, or damaged wires in the MAP circuit.
- Intake manifold gasket failure: Leaking gaskets can create vacuum leaks that trigger P0106.
What You Should Replace
Diagnosis first. Use a code reader to pull live data from your MAP sensor while the engine is running at idle and under light load. Compare the voltage signal to your vehicle’s specifications. Most MAP sensors output between 0.5 and 4.5 volts depending on load. If the reading is erratic or stuck at one value, the sensor likely needs replacing.
If diagnostics confirm the MAP sensor is the problem, replace only the primary MAP sensor (AS419 or equivalent). You don’t need to replace both—O’Reilly’s suggestion to buy two different sensors for one P0106 code is overkill and wasteful.
After replacement, clear the code and test drive to confirm it doesn’t return. If it does, you likely have a vacuum leak or wiring issue that needs attention.
The Bottom Line
Your 2010 Range Rover 5.0 HSE has one MAP sensor that matters for P0106. Don’t buy two sensors based on O’Reilly’s recommendation. Get a proper diagnosis with a code reader, check for vacuum leaks, and replace only the component that’s actually failing.
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