Skip the auto shop - Our mechanics make house calls

Q: 05 Nissan Frontier has a code of p1283 and p0420. Why are these codes stored?

asked by on

P1283 and p0420 codes keej poping up I've reset it couple of times replaced converter bank 1 that was blocked and swapped air fuel sensors also the readings on air fuel sensors bank 1 are around 300 and bank 2 around 500 gas mileage is not great and idol is poor

My car has 190000 miles.
My car has an automatic transmission.

Hi there. The code p0420 is present for the O2 sensor behind the catalytic converter has detected the air fuel ratio is not within the limits. The code p1283 is present for the air fuel ratio sensor is registering a lean mixture. Check the fuel injectors to see if any of them are not working. If the engine is lean, there could be a vacuum leak on the intake or the fuel pressure could be lower than normal. Also, check the mass air flow sensor (MAF) to see if its dirty. If the MAF is dirty, clean the sensor with electrical cleaner and recheck the conditions. In order to get the warning light off, disconnect the battery for 30 seconds and hook up the battery. This will clear the codes so you can test drive the vehicle. If you need further assistance with the engine light on, then seek out a professional, such as one from Your Mechanic, to help you.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. 05 Nissan Frontier has a code of p1283 and p0420. Why are these codes stored?

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: p0420

A vehicle with 182,000 miles is likely due for a catalytic converter. Most of the time it does mean you need a new catalytic converter. But there are a couple of other things that are prudent to take a look...

Q: Check Engine light back on

The two code are for two different issues and if both codes were not fixed, or after the repairs the engine self learn was not reset, then the light may come back on and the car not run correctly. I...

Q: Cost for to replace the rear camshaft seal.

Billing question sent to CS for the cost of replacing the camshaft seal on a 2005 Kia Amanti with a V6-3.5L engine.

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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.