Q: Car failing smog check
My car is failing the smog test with the code OBDII Monitors Not Ready - Oxygen Sensor.
The statements expressed above are only for informational purposes and should be independently verified. Please see our
terms of service
for more details
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
What others are asking
Car wont start
The problem you are having may be the EIS ECU not turning on intermittently. There is a technical service bulletin from the manufacturer dated 11/29/2012 and the number is LI80.57-P-053608. You will need to dealer or a mechanic that has...
Extreme power loss, engine rattling.
Using 15w-40 instead of 5w-30 could be the cause of your problem. Your engine has very small passages that lead to the valve train. One components in particular, hydraulic lifters, require a good flow of oil through a small passage...
Fuel pump module failure, 2014 Chevy Suburban
Hi there: Let me answer your questions in order: 1) A fuel pump module is an electrical component, so in theory it should last the life of the vehicle. However, it's common for this part to war out sooner than...
Why does the battery go dead if you forget to use park? 2013 Ford Edge
Hello - newer cars are designed with convenience features that keep certain systems (radio and other infotainment systems) "active" UNLESS the car is in Park. This means there is an on-going battery drain (https://www.yourmechanic.com/article/how-to-diagnose-a-car-battery-drain_2), which will run your battery down...
Truck is overheating and the heater is blowing cold air.
Hi there. There is a blockage in the engine preventing the engine from cycling the coolant. If there is a new water pump and a new thermostat, then the coolant should be cycling. Check the radiator for any blockages. Drain...
Grinding in front right wheel
Hello, and thank you for writing in. When dealing with these issues there needs to be a general inspection done of the drive shaft, transfer case, differentials, and axles. Look for any obvious signs of damage, fluid leaking, or parts...
Would a content 4g64 engine from a 2001/2 Mitsubishi mirage bolt snap into a 2002 lancer Rally oz
Hi there. Unfortunately, engine swaps is not a service we offer at YourMechanic.com, as such; we're not able to offer advice on whether or not this engine will fit your application. I would advise you contact a local engine replacement...
Jerking reaction
Hi There, This may be a result of low transmission fluid (https://www.yourmechanic.com/services/transmission-fluid-service) or potentially a faulty transmission control module. A faulty transmission control module may cause a delay in acceleration or erratic shifting of gears. The transmission control module has...
Hey do a dodge Dodge Journey have a straight axle or one axle on both sides
Hello, thank you for writing in. If there is no damage to the passenger side of the vehicle, then do not worry about replacing that side's axle. You can just replace the left side. Double check the rest of the...
Related articles
How to Get Smog Technician Certified in California
Automotive technician jobs include smog certified emissions inspectors. In California, you need to work at an emissions testing station.
P1103 OBD-II Trouble Code: Mass Airflow Sensor in Range But Higher Than Expected
P1103 means there is an issue with the mass airflow sensor, likely due to faulty or loose wiring and connectors in the sensor, or an air leak.
OBD-II Trouble Code P0371: Timing Reference High Resolution - Signal A - Too Many Pulses
P0371 means there is an issue related to an ignition system error or misfire, likely due to a defective camshaft or crankshaft position sensor.
Browse other content
Cities
Estimates