Skip the auto shop - Our mechanics make house calls

Q: Would a major leak from my exhaust back box cause it to fail the emmisions test and LAMDA reading

asked by on

Would major leak to exhaust back box be a cause of emmisions test failure or lamda test failure

My car has 107000 miles.
My car has a manual transmission.

Hello - while an exhaust leak can have a minor effect on emissions, I would not expect that to cause a "Fail" - UNLESS your state or metro area does tolerate an exhaust leak for safety reasons (carbon monoxide poisoning for example). The inspection rejection notice should indicate whether unacceptable levels of hydrocarbons or oxides of nitrogen were the cause (or some other issue) were the cause of the failure. This information will instruct what problem area to pursue to correct the failure. Check for any problem codes, whether the Check Engine light is on or not. These will guide diagnosis and repair. If you need help detecting and repairing a leak, a qualified technician from YourMechanic can assist you with this.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  • Home
  • Questions
  • Would a major leak from my exhaust back box cause it to fail the emmisions test and LAMDA reading

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: When accelerating, the sound is different

Hi there. Heavy black smoke is usually a sign of a rich fuel condition present in your car's engine. When this happens, the motor is receiving more fuel than it can otherwise burn during the regular combustion cycle. This excess...

Q: vanos solenoid bmw

The nature of the repair will have to do with the faults stored in the DME (engine computer). Spark plugs, though rated at 100K miles, have a service life of about 60K miles and should be replaced at tht mileage....

Q: Will the P0597 code cause the car to fail emissions inspection in North Carolina?

Hi there. The code P0597 is for the thermostat heater control circuit. This means that the thermostat is electronically controlled in your vehicle. To see why this code is on, check the following: A loose or corroded connector on...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.