Question about 2003 Suzuki Grand Vitara

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PO135 Error Code

2003 Suzuki Grand Vitara
1.6 Pertol Jeep

Where is the O2 Heater Circuit Sensor 1 Bank 1?


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Bank one stands for the same side as the number 1 cylinder. Sensor 1 is the first sensor in the bank, (closest to the engine or upstream).
In most cases you will find it on the drivers side\left hand side of the engine and above the catalytic converter. Look for it on the lower portion of the exhaust manifold.

Posted on Sep 07, 2009

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Related Questions:

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There is a full description here, most likely you have a faulty oxygen sensor.
P0135 Suzuki O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1

Jun 23, 2014 | 2002 Suzuki Grand Vitara

1 Answer


what engine,, 2Lx4 or 2.5L V6?
first off ,nobody needs to do anything, free country still.
but the 135s are clear.
135= B1S1 bank 1, sensor 1,
on 4 banger its the all important front sensor
on v6 its left front bank sensor.
and the code means, the heater in the sensor id DEAD.
or the wire to it melted and is broking off.
the ECU never lies. about this, the current to the sensor is zero. and bad.
you can buy a bosch sensor in any car store in the USA, (all)
you can use the PNP,plug and play or hand wired. both ways
are 100% effective.
what happens is your motor runs rich until fully warm.
that causes, 3 things (top three of many)
1: cold drive-ablity.
2:wasted fuel.
3 : over works the CAT , cutting its life span a lot.

Mar 28, 2013 | 2005 Suzuki Grand Vitara

1 Answer

Hearter sensor po135

That's a code for the heater circuit for the bank 1 sensor 1 O2 sensor. Bank one is always the same side of the engine as the number 1 cylinder (V-6 engines). Sensor 1 is always before the catalytic converter.

Dec 30, 2012 | 2003 Toyota Highlander

1 Answer

2000 Pontiac Montana. Error code PO135 O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1

Replace O2 sensor one in cylinder bank one.
The sensor is the one before the ca converter in the cylinder bank that contains cylinder #1 See diagram below. Please rate my help.

Oct 08, 2012 | 2000 Pontiac Montana

1 Answer

2003 dodge caravan V6 error code po135

PO135--- Oxygen Sensor Heater Circuit Malfunction
(Bank 1 Sensor 1)

Oct 06, 2012 | 1999 Pontiac Grand Am GT

1 Answer

2005 dodge grand caravan 3.8 code po135 in stalled new botch o/2 sensor cleared codes drove van check eng light came back on same code whats is going on

Code 135 is for a faulty heater in the O2 sensor. Since you have replaced the sensor the problem is probably the circuit or the power source for the heater.
You'll need to check the heater circuit next.

Jul 29, 2012 | Cars & Trucks

1 Answer

P0134 O2 sensor circuit no activity detected

Change the O2 sensor. That code is for Bank 1 Sensor 1

Sep 09, 2011 | 2000 Suzuki Grand Vitara

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

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