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2010 toota camry code p2237

I have a 2010 toyota camry hybrid ,it came in with an o2 heater code p0031 and i replcaced the o2 and now im getting a p2237 code [o2 sensor pumping current open b1 s1. i have put two after market o2s in and now have one from toyota and still the same thing . we have also scoped the air fuel side and are getting 3.3 volts and 2.9 volts . thanks for an input mike

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SOURCE: 5vz-fe misfire codes

Replace the coil pack.

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SOURCE: the 4runner is throwing 3

Replace the coil pack..

Posted on Dec 26, 2008

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SOURCE: i have my check engine light on and a p0031 error

On toyotas this is almost always a failed o2 period. Take it somewhere and have it put in. On v6's it is not that easy to get to.

Posted on Jul 10, 2009

  • 41 Answers

SOURCE: where is the b1 s1 o2 sensor located on my 2003

bank 1 sensor 1 il locates right infront of the catalytic converter . bank 1 sensor 2 is located in the catalytic converter

Posted on Jan 06, 2010

  • 615 Answers

SOURCE: '05 PT Cruiser O2 sensor problems.

I had a similar problem with my car. It turned out the O2 sensors were fine and the issue was a leak in the throttle body causing the engine to run lean. If you have an ODB2 scanner you can look at fuel trims, etc and will be able to tell.

Posted on Mar 28, 2010

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1 Answer

Where is the rear O2 sensor located on a 2007 Camry Hybrid?


It is just aft of the last catalytic converter. It is not an O2 sensor, it is a catalyst efficiency monitor.

Jul 05, 2016 | 2007 Toyota Camry Hybrid

1 Answer

2003 Lexus GS300 P0031 code


Yes the O2 sensor preheater problem will turn on the VSC light, see the complaint often, why? don't know
.P0031 TOYOTA - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 1
In most cases the O2 being replaced cures the code but here is the full story.
Possible causes- Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit open shorted to ground
- Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit poor electrical connection
- Faulty Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit
- Air-Fuel Ratio (A/F) Sensor Bank 1 Sensor 1 circuit fuse
- Faulty Engine Control Module (ECM)

Jun 16, 2012 | 2003 Lexus Gs 300

1 Answer

What would cause all these 2004 toyota camry v6 3.0 P0031, P0102, P0113, P2237, P2238, P2252 and P0101 codes at the same time.


Have the following checked for proper operation: Mass Airflow sensor (its located on the air filter box), oxygen sensors. If ok, I would recommend having the wires checked for possible damage from rodents biting on them.

Sep 07, 2011 | 2004 Toyota Camry

1 Answer

CODES P0031 AND P0051 A/F RATIO HEATER CIRCUIT low have no batt voltage at sensors can't find any blown fuses any idea 04 toyota sequoia


You will need wiring diagrams, to find components
and diagnose the problem

You have 2 O2 Sensor Codes-- for Heater issues

I would look for an O2 Relay, for the heaters, once
you have a diagram to work with

Battery voltage will be to the heaters only

Don't put your meter on the black sensor
wire, you may ruin the sensor, by loading the circuit

Just work the 2 white heater wires on chassis
side, for the 12 v

Unplug the O2 Sensors, and probe the harness heater
wires only, until you get your 12v back

Feb 23, 2011 | 2004 Toyota Sequoia

1 Answer

I have a 04 sequoia and the codes p0031 and p0051 are coming up. How do I fix this?


Trouble code P0031 means: Oxygen Sensor Heater Control Circuit Low - Bank 1 Sensor 1 .
Error code p0051:replace O2 sensor ($75-150 depending if OEM) before catalytic converter. need O2 socket ($10) to get at and tough to get to if vehicle isn't at least on a ramp.

Nov 22, 2009 | 2004 Toyota Sequoia

1 Answer

05 COROLLA P0031


What does that mean? A P0031 DTC (diagnostic trouble code) refers to the O2 sensor (oxygen sensor) located on Bank 1 in front of the catalytic converter. There is also an oxygen sensor behind the converter which is Sensor #2.
This O2 sensor #1 may also be refered to as an air/fuel ratio sensor since on some vehicles it is. It detects the amount of oxygen in the exhaust gas compared to the outside air and then vehicle's computer adjusts the air/fuel ratio going into the engine. The sensor is less effective when the exhaust gas temperature is low, so it includes a heater which is activated to help get better readings from the A/F O2 sensor. Essentially this P0031 code means that the resistance of the heater circuit is lower than normal. In most cases, that resistance level must fall below 0.8 A to trigger the DTC code.
Note, this code is very similar in nature to P0032, P0051, and P0052

Potential Symptoms Most likely you'll not notice any symptoms other than the MIL (malfunction indicator lamp, a.k.a. the check engine light) will illuminate.
Causes A P0031 DTC trouble code may be caused by one or more of the following:
  • A short or open 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
Possible Solutions Need an O2 Sensor? Visit our O2 Sensor shopping area for the lowest price on your replacement sensor!
To fix a P0031 DTC code, you'll need to do a proper diagnosis. To do that, you'll want to inspect the wiring and connectors leading to the sensor. Also if equipped with a heater relay and fuse, you'll want to check those as well. Use a digital volt ohm meter to:
  • check for 12 volts at the heater circuit feed (hint: unplug the sensor and check at the wiring connector to do this measurement)
  • check the ground circuit for continuity
  • measure the resistance of the heater circuit (done on the sensor itself)
  • measure the resistance and voltage of the wiring
Refer to a service manual for the correct specifications (volts, ohms) for your vehicle. On some Toyota vehicles this code is triggered when the resistance of the heater circuit is below 0.8 A.
With that said, a common fix for this DTC is to replace the air/fuel (O2 oxygen) sensor #1 on bank 1.
Please keep in mind that OEM (original equipment) replacement sensors are recommended (from the dealer). Aftermarket sensors can be less reliable and of poorer quality (not always, but more often). There's also a chance that replacement parts for the P0031 code may also fall under a federal emissions warranty (check with your dealer to see if it's covered).

Aug 20, 2009 | 2006 Toyota Corolla

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