P0140 OBD Engine Code Logo   Code #P0140 -
O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)

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Hyundai Sonata
Check engine light on intermittently. Returned code P0140, 02 Circuit, No Activity Detected Bank 1 Sensor 2. Car starts and runs fine


starts cold after a lil ride has trouble starting once u park and come back but starts with difficulty

P0140

running rough

Tried o2 sensor and I drive a Chevy lumina 96

had p0420 code, replaced cat,scan p0140 code now engine light off

GMC Safari
why do I have a 140 code showing after replacing cat.


Toyota Sequoia
0140


Scan indicates voltage on O2 sensor ranges between .2 and .8. So it appears that the O2 sensor is connected and operating. However I am getting the code.

doesn't seem to effect a infrequently used 1996 Buick LeSabre -haven't tried to fix it till now (inspection due!)

Buick LeSabre
no symptoms noticed


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p0454 code

p0140 check engine light stay on

Mercedes-Benz ML320
check engine light stay on


Had error message P0140, P0141, P0154 and P0155. Replaced both O2 sensors within two days error message returned.

p0140

hyundai getz 1.3 05 lammda p0140

replaced 02 sensor

Cooper
hfojs.


Asuna
skvowV wow, awesome article.Much thanks again. Want more.




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When did your Check Engine Light Come On?
Does your Car Start?
Does your Car Vibrate? Shake?
Does your Car Idle Roughly? Reduced Power?

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Other Comments

P0337 well not start, put on a new starter it started then well not start amore

P0133 Toyota Rav4
replaced the up stream, but no check light. (bank 1 sensor 1) could it be down stream one.


P0133 is it up stream or down stream?

P0701 Ford Five Hundred
When useing the cruise control the engine light comes on and transmission fails. Turn engine off and back on transmission resets.


P0701 When using the cruise control engine light comes on then transmission fails.



Other Check Engine Light Codes

P0072   Ambient Air Temperature Sensor Circuit Low Input
P0221   Throttle/Pedal Position Sensor/Switch 'B' Circuit Range/Performance Problem
P0256   Injection Pump Fuel Metering Control 'B' (Cam/Rotor/Injector)
P0390   camshaft Position Sensor 'B' Circuit
P0420   Catalyst System Efficiency Below Threshold (Bank 1)
P0522   Engine Oil Pressure Sensor/Switch Low Voltage
P0577   Cruise Control input Circuit High
P0631   VIN Not Programmed or Mismatch - TCM
P0757   Shift Solenoid 'B' Stuck On
P0907   Gate Select Position Circuit High




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