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Dan
Dan, ASE Certified Technician
Category: Kia
Satisfied Customers: 1389
Experience:  Dealer Auto Technician
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Have 2002 kia sportage, bought used multiple problems.

Customer Question

have 2002 kia sportage, bought used multiple problems. replaced wires, coils, coil wires, sparkplugs, fuel injectors, multiple sensors, o2 sensors. All problelms solved except when cranked, po 131, and 135 light come on after about 5 miles. Seems to go into safe mode. Can take code reader cut light off, will run for ever fine until you cut it off again. then same thing over. after erased code light goes on fine again, have tried everything, cant understand why after initial erase of code, maybe not hot enough or too lean, does not do it again until start engine again
Submitted: 5 months ago.
Category: Kia
Expert:  Dan replied 5 months ago.

DTC Code P0131

DTC Code:P0131

Description: Oxygen Sensor Circuit Low Voltage (Bank 1, Sensor 1)

Probable Causes:

  1. Sensor or solenoid faulty
  2. Connector terminal contact is damaged or corroded
  3. Wire harness - Check harness for correct voltage, open, short to ground or short to voltage
  4. Update control unit software - Check for the latest control unit update
  5. Powertrain or Engine Control Module faulty
  6. Fuel mixture lean
  7. Fuel pressure - Pump, regulator, filter or lines
  8. HO2S sensor contamination/damaged
  9. Exhaust leaks or restrictions
Expert:  Dan replied 5 months ago.

DTC Code:P0135

Description: Oxygen Sensor Heater Circuit (Bank 1, Sensor 1)

Probable Causes:

  1. Sensor or solenoid faulty
  2. Connector terminal contact is damaged or corroded
  3. Wire harness - Check harness for correct voltage, open, short to ground or short to voltage
  4. Open fuse
Expert:  Dan replied 5 months ago.

You need a scan tool that can read live data. You can look at short and long term fuel trims and oxygen sensor voltage readings.

You can check for vacuum leaks, that would cause a lean condition.

If you need more help, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service. You can rate at any time and we can continue to work on your question, this does not close out your question. Remember, in some cases it can be difficult to completely diagnose or help repair your vehicle without being there, but I try to give you the best possible answer with the information that I have.

Thanks Dan

Expert:  Dan replied 5 months ago.

Hello again Dan here,

I am contacting you because the post has not been closed or rated. We have 7 days to get a post rated before it times out. When a post times out, that means its no longer on my active list (if you reply I never know it.) You have already paid the fees to get this question answered, but it appears you’re not pleased, or need more help.

Let me help some more. Is there anything else you feel I could offer so you would be pleased with my help.

Thanks Dan