Question about 2000 Toyota Avalon

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Check engine light produces a p1155 and 1135. both say same thing open ground, heater control circuit failure PCM failed but for bank 1 and bank 2. not passing emissions.

Changed O2 sensors. new air filter, fuel filter. checked for vacuum leaks. visual inspection,

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Do you have a wiring diagram(s)? Find one,if not.
All data is helpful,but they charge $26.95 for a year.
Free is better.
Check for recalls on your model. NHTSA.
Check PCV and EGR valves for leaks,vacuum booster and...More.
Circuit voltage on harness side,not with an ohm meter at component.
You may need a more expensive diagnostic tool.
Get into an Avalon forum to see if that code has been difficult to diagnose.

Posted on Nov 11, 2014

Testimonial: "No, it run perfect, it passed emissions except for the fact the fix engine lit was on. I run synthetic oil, no leaks. burns no oil between changes which is 8000 miles. runs a little rich. Its responsive, and powerful, just says I have open circuit etc,"

  • troy peck
    troy peck Nov 11, 2014

    Sorry that was for the next guys answer. I will chech those things out. Sound like the answer i was looking for as my next step,

  • ddd228 Nov 11, 2014

    In Washington State,if the CEL is ON,it will fail emission test.

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  • 94 Answers

If Emissions are high, is it burning oil? Do you have to top up the oil regularly?

could be a sign that the engine is dying, and would need to be replaced. If it can't pass emissions, then i wouldn't worry about the electrical issues, and scrap the car.

Posted on Nov 11, 2014

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I have a 06 Corolla that is giving a P0037 code I have replaced the Oxygen sensor closest to the Catalytic converter Twice


it should be the o2 after cat converter ----and the following information courtesy of OBDP0037 HO2S Heater Control Circuit Low B1S2 OBD-II Trouble Code Technical Description Article by Dale Dale Toalston ASE Certified Technician Generic: HO2S Heater Control Circuit Low (Bank 1 Sensor 2) Nissan: Heated oxygen sensor (HO2S) 2 Bank 1 - heater voltage low What does that mean? Heated Oxygen sensors (HO2S) are inputs used by the PCM (Powertrain Control Module) to determine oxygen content in the exhaust system. Bank 1, sensor 2 refers to the second sensor back on bank 1. The PCM uses the information gained from the Bank 1,2 HO2S mainly to monitor the efficiency of the catalytic converter. Integral to this sensor is a heater element The PCM controls this heater to warm up the sensor to operating temperature. This allows the engine to enter closed loop faster and reduces emissions on cold startup. The PCM continuously monitors the heater circuits for abnormal voltages or in some cases, even amperages. Depending on the make of vehicle, the Oxygen sensor heater is controlled one of two ways. One way is that the PCM directly controls the voltage feed to the heater either directly or via a HO2S relay and a ground is supplied from the vehicle's common ground. The other way would be a fused 12 volt Battery feed (B+) that feeds 12 volts to the heater element anytime the ignition is on and the control of the heater is done by a driver in the PCM which controls the ground side of the heater circuit. Finding out which one you have is important because the PCM activates the heater under various circumstances. If the PCM detects an abnormally low voltage condition on the heater circuit, P0037 may set. Symptoms Symptoms of a P0037 DTC may include: Malfunction indicator lamp (MIL) illumination There will likely be no other symptoms Causes Potential causes of a P0037 trouble code may include: Bank 1,2 oxygen sensor heater element has failed Physical damage to heated oxygen sensor has occurred Control circuit (or voltage feed, depending on system) is shorted to ground PCM Oxygen sensor heater driver has failed === Possible Solutions== Do a visual inspection of the Bank 1,2 HO2S and wiring harness. If there is any damage to the sensor or any damage to the wiring, repair/replace as needed. Make sure wiring is routed away from exhaust. If all appears okay, unplug the Bank 1,2 HO2S and verify that there is 12 volts B+ present with the key on engine off, (or ground is present, depending on the system). Verify the heater control (ground) circuit is intact. If so, remove the o2 sensor and inspect for damage. If you have access to resistance specifications you can use a Ohmmeter to perform a resistance test of the heater element. Infinite resistance indicates an open in the heater. Replace the o2 sensor as necessary.

Read more at: http://www.obd-codes.com/p0037
Copyright © OBD-Codes.com-CODES.com

Jul 28, 2015 | 2006 Toyota Corolla

1 Answer

Loaction 2004 Dodge Durango code P0058


following answer courtesy of OBD-CODES,com P0058 HO2S Heater Control Circuit High (Bank 2 Sensor 2) OBD-II Trouble Code Technical Description Article by Dale Dale Toalston ASE Certified Technician Generic: HO2S Heater Control Circuit High (Bank 2 Sensor 2) Nissan: Heated oxygen sensor (HO2S) 2 Bank 2 - heater voltage high What does that mean? This code is a generic powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may be slightly different depending on the model. Oxygen sensors with a heating element are common on today's engines. Heated Oxygen sensors (HO2S) are inputs used by the PCM (Powertrain Control Module) to determine oxygen content in the exhaust system. The PCM uses the information gained from the Bank 2,2 HO2S mainly to monitor the efficiency of the catalytic converter. Integral to this sensor is a heater element. While in pre-OBD II vehicles an Oxygen sensor was a one wire sensor, now they are more commonly 4 wire sensors: Two dedicated to the oxygen sensor and two dedicated to the heater element. The oxygen sensor heater basically decreases the time needed to achieve closed loop. The PCM controls the heater on-time. The PCM also continuously monitors the heater circuits for abnormal voltages or in some cases, even abnormal amperages. Depending on the make of vehicle, the Oxygen sensor heater is controlled one of two ways. (1) The PCM directly controls the voltage feed to the heater either directly or via a HO2S relay and a ground is supplied from the vehicle's common ground. (2) There is a fused 12 volt Battery feed (B+) that feeds 12 volts to the heater element anytime the ignition is on and the control of the heater is done by a driver in the PCM which controls the ground side of the heater circuit. Finding out which one you have is important because the PCM activates the heater under various circumstances. If the PCM detects an abnormally high voltage condition on the heater circuit, P0058 may set. This code is only referring to the heating circuitry half of the Oxygen sensor. Bank 2 is the side of the engine that does not contain cylinder #1. Symptoms Symptoms of a P0058 DTC may include: MIL (Malfunction indicator lamp) illumination There would likely be no other symptoms. Causes Potential causes of a P0058 code include: Faulty Bank 2,2 HO2S (Heated Oxygen sensor) Open in the heater control circuit (12 volt PCM controlled systems) Short to B+ (battery voltage) in the heater control circuit (12 volt PCM controlled systems) Open ground circuit (12 volt PCM controlled systems) Short to ground on heater control circuit (On PCM ground controlled systems) Possible Solutions First, do a visual inspection of the Bank 2, 2 HO2S (heated oxygen sensor) and it's wiring harness. If there is any damage to the sensor or any damage to the wiring, fix it as needed. Check for bare wires where wiring enters sensor. This often can fatigue and cause shorts. Make sure wiring is routed away from exhaust. Repair wiring or replace sensor as necessary If all appears okay, unplug the Bank 2,2 HO2S and verify that there is 12 volts B+ present with the key on engine off, (or ground is present, depending on the system). Verify the heater control (ground) circuit is intact. If so, remove the o2 sensor and inspect for damage. If you have access to resistance specifications you can use a Ohmmeter to perform a resistance test of the heater element. In

Read more at: http://www.obd-codes.com/p0058
Copyright © OBD-Codes.com

Jul 27, 2015 | Dodge Cars & Trucks

3 Answers

Is p0052 a fuse problem or a o 2 sensor


P0052 DTC trouble code may be caused by one or more of the following:
A short in the heater circuit in the sensor.
A failed O2 sensor heater.
Wiring/connectors broken/frayed leading to sensor and/or relay.
Failed PCM/ECM.

Jan 01, 2015 | Cars & Trucks

1 Answer

Needdiagnosis on 02 toyota siena le 3.0 have problem codes p1135,po141


3.0L V6

Sienna
wild guess, the 1MZ engine?



141 fed code is. (it means B1S2 heater is bad,or wire to it cut or shorted.) below is fSM spec. worsd.





HO2S-12 (Bank 1 Sensor 2) Heater Circuit Malfunction








Number of Trips to Set Code: 2

Trouble Code Conditions:

Engine started, engine running, and the PCM detected the HO2S-12 heater current exceeded 2 amps, or that it was 0.25 amps or less.

Possible Causes:



  • * HO2S heater control circuit is open, shorted to ground or power


  • * HO2S heater power circuit is open (check power from the relay)


  • * HO2S heater is damaged or has failed


  • * PCM has failed



then the factory code p1135 same deal,same reasons B1S1





A/F Sensor-11 (Bank 1 Sensor 1) Heater Circuit Malfunction








Number of Trips to Set Code: 2

Trouble Code Conditions:

Engine started, engine running, and the PCM detected the A/F Sensor-11 (A/FS-11) heater current was less than 0.25A, or that it was more than 8.0A at anytime during the CCM test.

Possible Causes:



  • * A/F sensor heater circuit or ground circuit is open


  • * A/F sensor heater power circuit is open


  • * A/F sensor heater is damaged or has failed


  • * PCM has failed




bar stool answer.

both bank 1 senors (oxygen) are bad. if wires are good.



easy answer ,no?



the PCM never lies. the current IS ILLEGAL,(BAD)

the why takes , inspection and ohms checks , FSM shows this..



your next question is where is bank 1,

its on cylinder 1 side.

your next question is , where is cylinder 1,

it the cylinder that sticks out further to crank front pulley.



front 134

front 246

Feb 27, 2014 | Toyota Sienna Cars & Trucks

1 Answer

PO141


Trouble Code: P0141

HO2S-21 (Bank 1 Sensor 1) Heater Circuit Malfunction

Possible Causes:


HO2S heater control circuit is open or shorted to ground.
HO2S heater power circuit open between the heater and PCM.HO2S heater is damaged or has failed.PCM has failed (it controls the heater with a duty cycle signal).The sensor is on the passenger side,that is cylinder number one.

Jan 27, 2013 | 2002 Mazda Millenia

3 Answers

2002 dodge caravan engine light on code showing p0135 .please advice.thanks.


  • O2 Sensor Heater Circuit Malfunction - Bank 1 - Sensor 1
  • Basically the ECM Electronic Control Unit has determined your O2 sensor is taking to long to begin reacting properly.
  • The causes could be
  1. O2 heater element resistance could be to high.
  2. An internal short or opening in the heater element.
  3. O2 heater circuit wiring with high resistance.
  4. Open or short to ground in the wiring harness.

  • The fixes are
  1. Check the harness and connector to the O2 sensor for shorts or ground.
  2. Replace that O2 sensor.

  • Bank 1 sensor 1 location for this vehicle is located on the exhaust manifold back by the firewall on top of the manifold..
  • Thank you for using FixYa


Regards, Tony

Jun 19, 2011 | 2002 Dodge Grand Caravan

1 Answer

I have p044 code for Camry 2004


P0044 - HO2S Heater Control Circuit High (Bank 1 Sensor 3)

The P0044 is set when the ECM detects an excessively high voltage through the heated oxygen sensor heater circuit

Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).

In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.

Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)

Possible causes
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 3 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 3 circuit poor electrical connection
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 3 circuit
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 3 circuit fuse
- Faulty Engine Control Module (ECM)

The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.

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Hope helps (remember to rate this answer).

Mar 15, 2011 | 2004 Toyota Camry

2 Answers

Po134 trouble code


Hi:
This code refers to the front oxygen sensor on Bank 1. Basically the oxygen sensor is inactive. Here's why:
The powertrain control module (PCM) provides a baseline voltage of about 450 mV on the oxygen sensor signal circuit. When cold, the PCM detects the the internal resistance of the sensor is high. As the sensor warms up the resistance is lowered and it starts producing voltage based on the oxygen content in the exhaust. When the PCM determines that the time it took for the sensor to warm up is greater than one minute or that the voltage is inactive (not reading outside 391-491 mV it views the sensor as inactive or open and sets the P0134 code.Potential Symptoms
One or more of the following may occur:
  • Check engine light illumination
  • Poorly running/engine missing
  • Blowing black smoke
  • Poor fuel economy
  • Dying, stuttering
Causes A code P0134 may mean that one or more of the following has happened:
  • Bad O2 (oxygen) sensor
  • Bad heater circuit in the O2 sensor
  • Wiring or connector to the sensor frayed / broken
  • Blown heater circuit fuse
  • Holes in the exhaust system
  • PCM failure
Possible Solutions The most common fix is to replace the oxygen sensor. But that doesn't rule out the possibility of:
  • Rusted exhaust pipe
  • Inspect wiring & connector(s) for problems
  • Excessive amperage blowing heater fuse (still requires replacement of sensor but also replacement of blown fuse)
  • Replace PCM (only as last resort after all other possibilities are covered.

Dec 10, 2009 | 1999 GMC Yukon

1 Answer

My check engine light is on and I received code P1135, Manufacturer Control Fuel Air Metering is the defintion of the code. What parts do I need to get to fix problem myself?


Not sure where you got that definition for that code but this is what it is and means with possible causes for whichever motor you have:

Trouble Code: P1135 (2.4L L4 VIN - Auto)
A/F Sensor-11 (Bank 1 Sensor 1) Heater Circuit Malfunction Print this code dataprint_icon_codes.gif
Number of Trips to Set Code: 2
OBD II Monitor Type: CCM Details
Indicators: MIL Details
Trouble Code Conditions:
Engine started, engine running, and the PCM detected the A/F Sensor-11 (A/FS-11) heater current was less than 0.25A, or that it was more than 8.0A at anytime during the CCM test.

Possible Causes:
  • A/F sensor heater circuit or ground circuit is open
  • A/F sensor heater power circuit is open
  • A/F sensor heater is damaged or has failed
  • PCM has failed

2001 Toyota Highlander - I4 - P1135, P1155


Trouble Code: P1135 (3.0L V6 VIN - Auto)
A/F Sensor-11 (Bank 1 Sensor 1) Heater Circuit Malfunction Print this code dataprint_icon_codes.gif
Number of Trips to Set Code: 2
OBD II Monitor Type: CCM Details
Indicators: MIL Details
Trouble Code Conditions:
Engine started, engine running, and the PCM detected the A/F Sensor-11 (A/FS-11) heater current was less than 0.25A, or that it was more than 8.0A at anytime during the CCM test.

Possible Causes:
  • A/F sensor heater circuit or ground circuit is open
  • A/F sensor heater power circuit is open
  • A/F sensor heater is damaged or has failed
  • PCM has failed

2001 Toyota Highlander - V6 - P1135

Oct 21, 2009 | 2001 Toyota Highlander

4 Answers

Engine light poo38


That is the oxygen sensor on bank 1 down by the cat converter.

Oct 21, 2009 | 2004 Jeep Liberty

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