P1497
Downstream Throttle Air Leak
P1497 is an OBD-II diagnostic trouble code meaning: Downstream Throttle Air Leak. Common causes: cracked or damaged intake manifold, worn or damaged vacuum hoses. Estimated repair cost: $6–56.
Symptoms
- Unstable engine idling
- Floating speed
- Reduced engine power
- Increased fuel consumption
- Difficulty starting the engine
Causes
- Cracked or damaged intake manifold
- Worn or damaged vacuum hoses
- Leaking intake manifold gasket
- Damage to the throttle valve or its seals
- Exhaust gas recirculation (EGR) system malfunction
How to Fix
- Visual inspection of the intake tract for damage
- Checking vacuum hoses for leaks
- Testing the system for leaks using a smoke generator
- Replacing damaged hoses or gaskets
- Checking and cleaning the throttle valve
Related codes
Error P1497 by Vehicle Brand
FAQ
What does the P1497 code mean?
P1497 is an OBD-II diagnostic trouble code that indicates: Downstream Throttle Air Leak
What causes a P1497 error code?
The most common causes of P1497 include: Cracked or damaged intake manifold; Worn or damaged vacuum hoses; Leaking intake manifold gasket; Damage to the throttle valve or its seals.
How do I fix a P1497 diagnostic trouble code?
To fix P1497: Visual inspection of the intake tract for damage. Checking vacuum hoses for leaks. Testing the system for leaks using a smoke generator. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1497?
Yes, but get it checked soon
How much does it cost to fix P1497?
The estimated repair cost for P1497 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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