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Can i bypass the oxygen sensor eliminater on a cb1300 with 330 ohm resisters

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2002 toyota avalon engine check light on P0078 and P007C


P0050 HO2S Heated Oxygen Sensor -Control Circuit (Bank 2 Sensor 1)

P0051 HO2S Heated Oxygen Sensor -Control Circuit Low (Bank 2 Sensor 1)

P0052 HO2S Heated Oxygen Sensor -Control Circuit High (Bank 2 Sensor 1)

P0053 HO2S Heated Oxygen Sensor -Resistance (Bank 1 Sensor 1)

P0054 HO2S Heated Oxygen Sensor -Resistance (Bank 1 Sensor 2)

P0055 HO2S Heated Oxygen Sensor -Resistance (Bank 1 Sensor 3)

P0056 HO2S Heated Oxygen Sensor -Control Circuit (Bank 2 Sensor 2)

P0057 HO2S Heated Oxygen Sensor -Control Circuit Low (Bank 2 Sensor 2)

P0058 HO2S Heated Oxygen Sensor -Control Circuit High (Bank 2 Sensor 2)

P0059 HO2S Heated Oxygen Sensor -Resistance (Bank 2 Sensor 1)

P0060 HO2S Heated Oxygen Sensor -Resistance (Bank 2 Sensor 2)

P0061 HO2S Heated Oxygen Sensor -Resistance (Bank 2 Sensor 3)

P0062 HO2S Heated Oxygen Sensor -Control Circuit (Bank 2 Sensor 3)

P0063 HO2S Heated Oxygen Sensor -Control Circuit Low (Bank 2 Sensor 3)

P0064 HO2S Heated Oxygen Sensor -Control Circuit High (Bank 2 Sensor 3)

P0065 Air Assisted Injector -Range/Performance

P0066 Air Assisted Injector -Circuit Malfunction or Circuit Low

P0067 Air Assisted Injector -Circuit High

P0068 (MAP) Manifold Absolute Pressure /(MAF) Mass Air Flow - Throttle Position

Correlation

P0069 (MAP) Manifold Absolute Pressure / (BARO)Barometric Pressure Correlation

P0070 Ambient/Outside Air Temperature Sensor -Circuit Malfunction

P0071 Ambient/Outside Air Temperature Sensor -Range/Performance Problem

P0072 Ambient/Outside Air Temperature Sensor -Circuit Low Input

P0073 Ambient/Outside Air Temperature Sensor -Circuit High Input

P0074 Ambient/Outside Air Temperature Sensor -Circuit Intermittent

P0075 Intake Valve Control Solenoid Circuit Malfunction (Bank 1)

P0076 Intake Valve Control Solenoid Circuit Low (Bank 1)

P0077 Intake Valve Control Solenoid Circuit High (Bank 1)

P0078 Exhaust Valve Control Solenoid Circuit Malfunction (Bank 1)

P0079 Exhaust Valve Control Solenoid Circuit Low (Bank 1)

P0080 Exhaust Valve Control Solenoid Circuit High (Bank 1)

P0081 Intake valve Control Solenoid Circuit Malfunction (Bank 2)

P0082 Intake Valve Control Solenoid Circuit Low (Bank 2)

P0083 Intake Valve Control Solenoid Circuit High (Bank 2)
P0084 Exhaust Valve Control Solenoid Circuit Malfunction (Bank 2)

Mar 22, 2013 | 2002 Toyota Avalon

Tip

How to make your own O2 Sensor Simulator!


What is an O2 sensor simulator?
The OBD-II cars (1996-1998) have two O2 sensors to measure the amount of oxygen in the exhaust gas. First sensor is measuring it right after gases escape engine and this data is used to adjust fuel trim of the engine, as well as catch some faulty conditions. The second sensor is located after the catalic converter, and is used to detect the health of catalic converter. The ECU expects the signal from the sensor to be oscillating from below 0.4v to above 0.6v, but not above 1.2v, every few seconds while driving.

If you install an aftermarket downpipe with no cat (which is for off-road applications only) the ECU will detect this and indicate an error (MIL). The You can reset the ECU to clear the error code.

How to build Your Own Oxygen Sensor Simulator!
The rest of the page shows how to build an oscillating signal generator with just the right frequency and voltage to fool the ECU. It is based on classical astable operating mode of 555 timer.

Don't attach it directly to the ECU right after assembly. Instead attach it to the battery and check the output. You should get approximately 0v/0.7v flipping about every 3.3 seconds when the car is not running, and 0v/0.9v when the car is running. The current should stay below 10mA.

One LED should be always on whenever the power is supplied. Another LED indicates when the output signal is high, so it should go on and off with the signal.

When tapping the ECU wires, check everything before hooking up the oscillator. The power source should read 0v when the key is removed, about 12.6v when they key is at ACC and about 14.3 when the alternator is running. The resistance between ground wire and the body shield of the ECU should be 0 ohms. And it would be best if you run the car and monitor the voltage of the original oxygen sensor wire before cutting it to make sure you have indeed got the right one. The resistance between ECU PIN #47 and ground is about 1.3 to 1.6 M Ohm.

The original sensor should still be dangling around, or plugged into the downpipe. The reason is that ECU also monitors the resistance of heater circuit inside the sensor. If you want to COMPELTELY disconnect it, you will need to measure the resistance of the heater circuit and install the right resistor between ECU PIN #72 and ECU PIN #31 Anyway, there is no need to do it if you just leave O2 sensor alone and only intercept the oxygen signal wire.

Components
R1 100 K Ohm
R2 1 M Ohm
R3 100 K Ohm
R4 10 K Ohm
C1 4.7 uF
C2 22 uF
D1 1.7v@20mA LED
D2 1.7v@20mA LED
1020059.png
I assume no responsibility for any kind of damages.

on Jul 10, 2010 | Mitsubishi Eclipse Cars & Trucks

1 Answer

1994 ford f150 oxygen sensor location


An Oxygen Sensor (O 2 S) or heated Oxygen Sensor (HO 2 S) is used on all engines. The sensor is mounted in the right side exhaust manifold on some V8 engines, while other V8 engines use a sensor in both right and left manifolds.

Heated oxygen sensors are located in the exhaust pipes below the exhaust manifolds. The sensors react with the oxygen in the exhaust gasses and generates a voltage based on this reaction. A low voltage indicates too much oxygen or a lean condition. Where as a high voltage indicates not enough oxygen or a rich condition.

Disconnect the Oxygen Sensor (O 2 S). Measure resistance between PWR and GND (heater) terminals of the sensor. If the reading is about 6 ohms at 68°F (20°C). the sensor's heater element is okay.

Hope this helps (remember to rating this free answer).

Oct 13, 2011 | 1994 Ford F150 Styleside Supercab

2 Answers

2007 Chevy Tahoe check engine scan codes: P0030, P0053, PO135 ~ Please advise or help : ( thought that advanced auto would have been a bit more helpful than handing me a piece of paper with codes and...


There is a fault with the inbuilt heater in the oxygen sensor, before the catalytic converter, on the exhaust pipe the same side of the engine as cylinder 1. The oxygen sensor has four wires within the cable sheath to the top of it. Two of the wires will share the same color. These wires supply power to an internal heating element wire within the sensor. Follow the cable from the oxygen sensor to the connector, you can do a lot testing here. Check the resistance between the two 'same coloured ' wires. The resistance is low, somewhere between 1 and 10 ohms. If there is no continuity (infinite resistance) then this is the fault and the sensor needs to be replaced. The codes: P0030 the oxygen sensor heater relay is at fault P0053 Oxygen heater resistance error P0135 Sensor 1 bank 1 error You are looking at replacement. A further confirmation take the connection from sensor 1 bank 1 and swap it with the sensor 1 bank 2 on the other side of the engine. The codes should 'transfer' and show P0036; P0059 and P0141.

Apr 26, 2011 | 2007 Chevrolet Tahoe

1 Answer

Where exactly is the bank one sensor one located on my 2003 Toyota Avalon? I know it is near the firewall but I can't quite locate it. Once I get it out, how do I test it to make sure it is the issue...


It's screwed into the exhaust manifold. A test is pasted below. Please let me know if you have questions, and thanks for using FixYa.

jturcotte_1119.gif
  1. Disconnect the oxygen sensor connector.
  2. Using an ohmmeter, measure the resistance between the terminals +B and HT. Resistance specification: 11 - 16 ohms at 20°C (68°F).
  3. If the resistance is not as specified, replace the sensor.
  4. Reconnect the oxygen sensor connector.


jturcotte_1120.gif

jturcotte_308.jpg

Feb 27, 2011 | Toyota Avalon Cars & Trucks

1 Answer

P0032 Oxygen sensor heater problem. This is on a 2004 Chrysler Town and Country 3.8 L V6.


The sensor in question is behind the engine on the exhaust manifold.

You can test the heater in the sensor with an ohmmeter using the following procedure:
  1. Disconnect the electrical harness from the sensor.
  2. The white wires in the sensor connector are the power and ground circuits for the heater.
  3. Connect the ohmmeter test leads to the terminals of the white wires in the heated oxygen sensor connector.
  4. Check the resistance of the sensor, if it is not within 4-7 ohms, replace the sensor.
  5. ea87f67.gif

Oct 24, 2010 | 2004 Chrysler Town & Country

1 Answer

Engine management light stays on garage said it was code 420 one garage said **** the cat converter emissions another garage said lambda sensor bank 1 which is it


It is usually the catalytic converter, but sometimes it is the oxygen sensor. If you have an volt/ohmmeter, you can check the sensor. Unfortunately I cannot access your wiring diagram, so I cannot tell you which terminals are which on the sensor. There are 4 pins in the plug. Check 2 at a time for resistance. When you find 2 that have a resistance of about 2-5 ohms, those are the heater terminals. Your sensor heater seems to be working. So, then you want to check the voltage on the other 2 terminals while someone revs the engine up and down. If you have more questions, please let me know. Here are testing instructions from autozone.com:
  1. Disconnect the Heated Oxygen Sensor (HO2S). Measure resistance between PWR and GND (heater) terminals of the sensor.
  2. With the engine hot-to-warm, the resistance should be 5-30 ohms.
  3. At room temperature, the resistance should be 2-5 ohms. If the readings are within specification, the sensor's heater element is okay.
  4. With the O2S connected and engine running, measure voltage with a DVOM by backprobing the SIG RTN wire of the oxygen sensor connector. The voltage readings at idle should stay below 1 volt. When the speed is increased or decreased, the voltage should fluctuate between 0 and 1 volt; if so, the sensor is okay.
  5. 4dab704.jpg

Oct 13, 2010 | 2004 Ford Fusion

1 Answer

P0155


Heated oxygen sensor (HO2S) 1 , bank 2, heater control -
circuit malfunction

sensor 1 is threaded into the exhaust manifold, passenger side of engine.

  1. Disconnect the oxygen sensor connector.
  2. Using an ohmmeter, measure the resistance between the terminals +B and HT. Resistance: 11 - 16 ohms at 20°C (68°F)
  3. If the resistance is not as specified, replace the sensor. Tighten to 14 ft. lbs. (20 Nm).
  4. Reconnect the oxygen sensor connector.

Oct 04, 2010 | 2002 Toyota Sequoia

2 Answers

Check engine light on my 2003 sienna, DTC was



Oxygen Sensor Connector locations

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  1. Disconnect the oxygen sensor connector.
  2. Using an ohmmeter, measure the resistance between the terminals +B and HT. Resistance specification: 11 - 16 ohms at 20°C (68°F).
  3. If the resistance is not as specified, replace the sensor.
  4. Reconnect the oxygen sensor connector.

Oxygen Sensor testing

db5ca10.gif


I really hope helped with this. Remember rated this help, good luck.

Nov 30, 2009 | 2003 Toyota Sienna

1 Answer

Obd code 141


DESCRIPTION
The Engine Control Module (ECM) uses oxygen sensor signals to maintain the air fuel mixture at the ratio resulting in optimum fuel economy and reduced emissions. The amount of oxygen in the exhaust gases indicates, to the front oxygen sensor, whether the air fuel mixture being supplied to the engine cylinders is rich or lean. The readings of the rear oxygen sensor are used to indicate the efficiency of the catalytic converter. The ECM calculates catalytic convener efficiency by comparing the rear oxygen sensor signal to the front oxygen sensor signal.

A normal oxygen sensor signal will constantly fluctuate above and below 500 mV , with the front oxygen sensor signal frequency of at least 5 Hz at 2500 RPM . Due to the effect of the catalytic converter, the rear oxygen sensor signal frequency will be lower than the front oxygen sensor signal frequency. If the rear oxygen sensor signal coincides with the front oxygen sensor signal a large percentage of the time, this indicates a loss in efficiency of the catalytic converter or a malfunction within the fuel system.

FAILURE CONDITIONS
After the engine runs for 2 minutes , the ECM checks the rear oxygen sensor heater circuit. If during two driving cycles the rear oxygen sensor's heater resistance is less than 4.6 Ohms or greater than 19.5 Ohms , the ECM will set P0141 and MIL will turn on. This code indicates an unusually high or low heater circuit resistance reading by the rear oxygen sensor or ECM.
If you find this information to be helpful please give me a fixya! rating Thank you ,Randy
If you need any further assistance please contact me by fixya or at fixincars@yahoo.com

www.aceautomotive1.com

Aug 18, 2008 | Hyundai Elantra Cars & Trucks

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