Question about 1996 Honda Civic

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Oxygen sensor i scanned my car with the obd 2 scanner and it said " oxygen sensor not ready"...what do i do?

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  • blakek Sep 12, 2008

    my obd2 scan result for my 96 honda civic said....

    "oxygen sensor- not ready" and

    "catalyst- not ready"

    how do i fix that problem?


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  • 73 Answers

May have to wait until engine is at operating temp before it will test those components.

Posted on Sep 12, 2008

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I just bought a 93 grand marquis. while driving to work the engine light comes on then goes off. It does this randomly all the way home. I hook up my scanner and get codes 172 and 136 Probably just need new O2 sensors ! Here is best way to test o2 sensors , with a fancy scan tool like this guy uses . unfortunately we can't all afford $ 10,000.00 . You can use a volt ohm meter , back probing the signal wire to the PCM . The O2 sensor should switch back an fourth 0.1 to 0.9 millivolts when the vehicle is warmed up . Goes into closed loop fuel control. Oxygen Sensor Test fixed rich signal

Sep 25, 2015 | Cars & Trucks

2 Answers

Mercury sable 2002 fault codes p0132,p1131,p1132

PO132 oxygen sensor high voltage bank 1 sensor 1
P1131 & P1132 lack of upstream heated oxygen sensor switch bank 1

Feb 23, 2015 | Mercury Cars & Trucks

1 Answer

Why is oxygen sensor not ready, if I replaced it already, and ran the car for 50 miles?

First--- you look at scan tool data & test parts
BEFORE you replace any

There are many O2 Codes & most sensors have
several things, in a trouble chart or trees, to follow,
to find problems

Evap System, is not the same system, as the Oxygen
Sensor Monitor is on--different codes to work on,
different problem

You have 8 Monitors

So get all your codes & find out what they are & component

OBD Codes have nothing to do with changing parts

They are only an indication of an out of range parameter

Nov 03, 2014 | 2001 Dodge Stratus

1 Answer

2004 hyundai elantra sedan check engine light on, 1st try at autozone gave P2251 followed by P0420, I reset the car computer to check if it comes back and it did after nearly 100 miles. second try at...

The codes that i have pulled out relates to Oxygen sensor and Catalyst converter faults.
P0420: Catalytic converter system,Bank 1,efficiency
below threshold.
P2251: Heated Oxygen Sensor (H02S)1, Bank 1, negative current control open circuit.
But not necessary the faults. You need to run the scope to see wht patterns u get on the oxygen sensor, and on the obd scanner you may be able to pick up oxygen sensor coming on and going off or rich or lean mixture and the mvolts of the sensor. Also check if the wires are not broken on the sensor. Sometimes a clogged O2 sensor can cause these problems.

Aug 13, 2014 | 2004 Hyundai Elantra

3 Answers

2002 Chevy replaced Egr valve and oxygen sensor 2says not ready for Egr and evap

Replacing parts on the chance of solving the problem can get expensive. Take it to someone who has a scanner tool to check the sensors. Sound like you have a sensor not working.

Jun 18, 2014 | 2002 Chevrolet Impala

1 Answer

2002 bmw 540i check engine light

Buy an OBD 2 scanner, or a less expensive OBD 2 code reader (OBD means on board diagnostics, 2 means second generation-anything built after 1996, generally). Plug into your car's diagnostic port and read the codes. The trouble codes relay what the computer detected as a problem-points you to a course of action. Whether you fix it yourself or take to a shop with the codes for the repairs.
Many national chains, such as Autozone, will do scans of the engine computer for free, hoping you will return there to buy parts. Be aware a trouble code does not relay a specific course of action-it only points you or a technician to what the computer saw as a problem, like a circuit failure in a sensor signal, it could be the sensor or the wiring associated with it. Common sense and a knowledge of how the many components and sensors work and interact will help one understand and find the problem. For example, a code of a bad oxygen sensor signal-reading too much oxygen in the exhaust-would not be a bad oxygen sensor, but one needs to check why the air-fuel mixture is wrong-too lean-is a vacuum line leaking, or is the fuel pressure too low-these are the types of questions that can arise from a trouble code.
If you want to avoid mechanics entirely, better buy a repair manual and learn all you can about modern engine management electronics.

Mar 17, 2013 | 2002 BMW 5 Series

2 Answers

Obd computer won't reset

you can force the engine light to come on with ready or not software (type it in on google) i have this gear. your ecu has to reconise all emmissions sensors data on a 3times in a row before it will complete a full diagnostics cycle.
the ready or not scanner and software will atomatically do everything for you and tell you when everything is ready (so much easier than messing about guessing all the time).
you can also program scanner to your state regulations aswell.think it's about $50 now

hope this helps.

regards, danny

Oct 01, 2012 | 2003 Dodge Caravan

2 Answers

Code p0332 and p0420

16716/P0332 - Knock Sensor 2 (G66): Signal Too Low Possible Symptoms
  • Irregular rpm
  • Drivability problems
  • Loss of power
  • Engine damage
Possible Causes
  • Circuit G66 short to Ground
  • Circuit G66 open
  • G66 improperly torqued
  • G66 damaged
  • Control Module damaged
16804/P0420/001056 - Catalyst System; Bank 1: Efficiency Below Threshold Possible Causes
  • Leakage in Intake and/or Exhaust System
  • Catalyst faulty
  • Oxygen Sensor(s) faulty
  • Oxygen Sensor(s) Control faulty
Possible Solutions
  • Check Intake and Exhaust System for Leaks
  • Check Catalyst
  • Check Oxygen Sensor(s)
  • Check Oxygen Sensor(s) Control
    • Perform Oxygen Sensor(s) Aging Check

May 03, 2010 | 2000 Chevrolet Monte Carlo

2 Answers

Where is the O2 sensor located on the 2003 V6 All Wheel Santa Fe and how dificult is it to replace?

Hyundai Santa Fe 2001-05
Heated Oxygen Sensor (H02S): The sensors are located in the exhaust system. On some vehicles, one sensor is located up at the exhaust manifold(s) and the other sensor is located down at the catalytic converter. On other vehicles, both sensors are located down at the catalytic converter.


How to Replace an Oxygen Sensor
1. Oxygen Sensor
2. Oxygen Sensor

1. 3/8 in. Drive Ratchet
2. Multimeter
3. Oxygen Sensor Socket
4. Combination Wrench Set
5. Crimp Tool
6. Socket Set
7. Scan Tool

Step 1 * Park the vehicle on a level surface. Set the parking brake and open the hood.
o Tip: Safety Tip:Always wear safety glasses when working on your vehicle. Wear other personal protective equipment (PPE) when necessary, for example latex gloves or safety shoes.
o Tip: Always make sure the struts on the hood can fully support the weight of the hood so that it does not close on you while working. The use of a hood prop can securely hold it in place.

Step 2 * With the engine off and cool, locate the defective oxygen sensor in the exhaust manifold or pipe. If necessary, lift the front of the vehicle and support it with jack stands.
o Tip: Most vehicles have multiple oxygen sensors. How many sensors, depends on the model year and type of engine.

Step 3 * Disconnect the wire connector at the defective oxygen sensor.

Step 4 * Remove the oxygen sensor from the exhaust system.

Step 5 * If you are installing a universal oxygen sensor, cut off the connector from the original sensor and splice the connector wires to the new oxygen sensor. Follow the manufacturer’s instructions supplied with the sensor.

Step 6 * For threaded oxygen sensors, apply anti-seize compound to the threads and install the new sensor.

Step 7 * For flange mounted oxygen sensors, install a new gasket and tighten the mounting bolts.

Step 8 * Reattach the wire connector from the sensor.

Step 9 * If necessary, connect the OBD I/II scanner and erase the fault code.

Hope help with this (remember rated and commented this help) Good luck.

Mar 01, 2010 | 2003 Hyundai Santa Fe

1 Answer

2000 saturn SL2,reader says PO131and (PO137 Peading)

P0131 - oxygen sensor circuit low voltage (bank 1 sensor 1)

P0137 - oxygen sensor circuit low voltage (bank 1 sensor 2)

These websites help me a lot. Hope they do the same for you too.

Jun 07, 2009 | 1999 Honda Civic

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