P0106 on a Lexus: Causes, Fixes & Repair Cost
🟠 Moderate severity · drivable
Safe to drive, but rough idle and slightly worse fuel economy may appear until the MAP sensor issue is fixed.
What P0106 means on a Lexus
On a Lexus, P0106 means the engine computer sees a manifold absolute pressure (MAP) sensor reading that is out of the expected range for engine conditions. The MAP sensor helps the computer measure engine load and adjust fuel. On Lexus models this usually points to a vacuum leak, often a cracked PCV or intake hose, or a weak sensor.
Is P0106 common on Lexuss?
P0106 appears on Lexus models with higher mileage, most often the ES, RX, and IS. Aging rubber hoses that crack and a weakening MAP sensor are the common culprits. While most Lexus engines rely heavily on mass air flow sensors, a MAP code like this still points to a vacuum or sensor fault, not engine damage.
Commonly reported on: ES, RX, IS, NX.
Symptoms
- Check engine light is on
- Rough or unstable idle
- Slightly worse fuel economy
- Mild hesitation when accelerating
Common causes
- most common: Cracked or loose vacuum hose
- common: Faulty MAP sensor
- common: Intake manifold gasket leak
- less common: Loose or corroded sensor connector or wiring
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Replace cracked vacuum or PCV hoses | Yes | $15–70 |
| Replace the MAP sensor | Yes | $60–180 |
| Repair an intake gasket leak | Mechanic | $150–400 |
Frequently asked questions
Other common Lexus codes
P0106 on other brands
Looking for the full (non-brand-specific) guide? See the P0106 code page →
Browse all Lexus codes: Lexus hub →
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.