Q: Getting multiple codes

asked by on February 16, 2016

I am getting codes P1507, P0135, P0155.

Hello. When you get these codes together it is typically the result of a vacuum leak. If there is too much air entering the engine, your truck will have idling problems and this will cause issues with the oxygen sensor readings. I would typically start by checking all of the vacuum hoses and do a smoke test on the engine to see if any leaks are present. If there are not any leaks, then I would use a scan tool to monitor the sensor inputs to see if the air volume sensor is reading correctly. This would help to narrow down the problem. If you were going to have a shop diagnose this, consider YourMechanic, as a certified mechanic can come to your office to perform these tests and repair the vehicle.

Was this answer helpful?
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

Get a quote

What others are asking

How do you engage automatic locking mode on the seat belts?

Your seat belts can be set to vehicle sensitive mode, which allows the shoulder belt to extend and retract as you need it. It will automatically lock when the system detects sudden deceleration while you’re traveling at over 5 MPH....

Car hesitates and jerks uphill

It's possible that your vehicle may need a tune up. If your vehicle is equipped with a distributor, the cap and rotor should be replaced as well. I would recommend help from a certified mechanic to assist you with your...

How do you lock the doors with the remote?

One of the best things about the remote with your car is that it lets you lock the doors from outside the vehicle. However, there are a few things you’ll need to know: Make sure that all doors are...

Related articles

The Best Used Cars to Buy If You're a Doctor Who Makes House Calls
If If you are a doctor who makes house calls, reliability is likely to be at the forefront of your mind when it comes to choosing a used car. You also expect a certain level of comfort. We have...
A Buyer’s Guide to the 2012 Ford Mustang
The The Ford Mustang has been an iconic vehicle for half a century, and its latest styling and updates only make it more attractive and more popular with American drivers. While its exterior may not be quite as eye-catching as...
The Best Used Cars to Buy for Dog Owners
Dog Dog owners are a special breed of drivers. When they shop for a used car they have a list of requirements that can be quite different from other drivers, which tends to make the process a bit of a...