1999 Honda Civic errors

1999 HONDA CIVIC
86,000 MILES • 4 CYL • FWD • MANUAL
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HARIS109
  • MEMBER
  • 1 POST
1.P0135 Powerttrain.HO2S Heater perfomance bank1 sensor1. 2.P0172 Powertrain.Fuel trim system rich bank 1. P0141 Powertrain. HO2S heater perfomance bank 1,sensor2. How can I fix it yourself, and tell me where to find the bugs,please help me...
Oct 23, 2010 at 4:26 AM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
Hi HARIS109,

P0135 = Primary HO2S-1 heater circuit malfunction.

P0172 = System too rich

P0141 = Secindary HO2S-2 heater circuit malfunction.

P0135 and P014 indicates both the heater circuit of the O2 sensor is faulty. I will send the diagnostic files to you.

As to the fuel trim too rich, P0172, it could be due to the faulty O2 sensors so primary concern is to get the O2 sensors problem rectified first.
Oct 23, 2010 at 4:42 AM
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