Acura P1164: Air Fuel Sensor (Bank 1 Sensor 1) Range/Performance

What Does The Acura P1164 Code Mean?

Engine speed over 1500 rpm in 4th gear in closed loop, then a quick acceleration to WOT, followed by a 5 second deceleration period with the throttle closed, and the PCM detected the A/F sensor response time or the R-L or L-R switch rate was too slow.

What Are The Potential Causes Of The Acura P1164 Code?

Below are some potential causes of this DTC:

• A/F sensor may be contaminated or may have failed
• Fuel supply system too lean (exhaust leaks in front of the LAF)
• Fuel supply system too rich (the fuel filter may be very dirty)
• PCM has failed

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> Acura Engine Control Module
>>> ZBN 234-5010 Oxygen O2 Sensor Upstream Front and Rear
>>> Autobahn88 Silicone Vacuum Hose Dress Up DIY Kit

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Acura P1164, DTCDECODE.