P1497
Downstream Throttle Air Leak
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$6–56 (est.)
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