Q: Bank 2 Sensor 1 PA03(?) code. Range performance issue?

asked by on September 30, 2016

Good day! Having a hell of a few weeks trying to fix my suv to pass emissions. First replaced the bank 2 sensor 1 a few months ago. Light came bank on for bank 2 sensor 2, fixed that. Light immediately came back on for sensor 1 again.. Took it to a highly recommended shop this time and they said it needed to be replaced AGAIN, basically the other mechanic screwed it up and another new part (costing twice as much as first one) needed. So, bank 2 sensor 2 replaced twice. Thought I'd be good to go, but no. Now there's a PA03? code. Something to do with range performance. They checked for leaks, changed MAF sensor, etc.. Check engine light continues to come back on with same code. Help please?! Thank you

My car has 165000 miles.
My car has an automatic transmission.

Check Engine Light is on Inspection $79.99 - $89.99 Get a Quote
Oxygen Sensor Replacement $108.80 - $869.59 Get a Quote

Hello. The code you have provided is not a valid automotive error code that I recognize. Based on your context I think it may be possible that there is an issue with the signal range of one of your oxygen sensors. If you’ve replaced the sensors then perhaps the issue may be with the wiring. I would carefully examine the wiring to the oxygen sensors, as well as the connector and contacts for any signs of damage, wear, or corrosion. If the sensors and wiring all check out then it may be possible that the issue is with the computer.

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

Oil coming from oil filter

If the filter is not tightened properly the vibrations of engine can work the filter loose over time. If you tightened the filter and it was still leaking that means that there was a problem with the seal on the...

DTC Help Request

You might have a problem with fretting corrosion in the connectors of the modules of the vehicle. There is a technical bulletin out for your Saturn VUE: 09-06-03-004D, dated December 2010 for corrosion in the small connector pins of the...

Average miles per gallon

Hi There, Assuming you are referring to the avg reading near the fuel mileage calculator, this relates to the average miles per gallon calculation that the computer calculates related to the fuel economy. This is nothing to worry about and...

My car won't start but it's not the alternator or battery

The problem sounds like a loose connection in the fuse box to battery cable connections. Check the cables for loose or corroded connections at battery clamps and ground connections on body and engine. If problem continues then have a mechanic...

What does the Intelligent Key detection Warning Light mean?

The Intelligent Key detection Warning Light is located on the instrument panel. This light can illuminate for two reasons: 1. The Intelligent Key is left outside of the vehicle when the ignition switch is moved to ACC or ON. 2....

Bank 1 is lean - 2001 Ford Mustang

As you know, this is caused by a lean fuel condition. This can be caused by a few different things, one of which is a dirty or failing mass air flow sensor, which you have already replaced. The other potential...

I have a 2012 Nissan Altima with a push button start that will not start. While depressing my brakes the brake lights do come on.

A no start on this vehicle may be caused by more than a few different problems and the first thing to check is to try another key FOB or hold your key FOB on the start button when pressing it...

Glow plug 5 3 and 2 have open circuits.

Hi there. The glow plug module will effect all the glow plugs not just 2, 3, and 5. I recommend replacing the glow plugs and the harness to the glow plugs. This is similar to replacing plugs and wires (same...

Why is my 2002 Ford Explorer not starting

If there is an engine light on and the parts were replaced, then you can remove the battery cables and reset the computer. This will clear the light and allow the engine to start up if there is no issues...

Related articles

P0154 OBD-II Trouble Code: O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
P0154 trouble code definition 02 Sensor Circuit No Activity Detected (Bank 2 Sensor 1) What the P0154 code means The oxygen sensor’s...
P0510 OBD-II Trouble Code: P0510 Closed Throttle Position Switch Malfunction
P0510 means a problem with the vehicle's throttle plate. Some issues are frequent engine stalling, high or low engine idling and trouble accelerating.
P2093 OBD-II Trouble Code: A Camshaft Position Actuator Control Circuit High Bank 2
P2093 P2093 code definition The P2093 code is a general OBD-II diagnostic trouble code indicating a fault with the “A” camshaft position actuator control circuit high bank 2. What the P2093 code means The camshaft position sensor “A” is indicating...