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For a Honda 2003 CRV, what do engine codes P1259, P1166 and

Resolved Question:

For a Honda 2003 CRV, what do engine codes P1259, P1166 and P1167 mean?
Submitted: 2 years ago.
Category: Honda
Expert:  proautotech replied 2 years ago.
Thanks for trusting us with your problem. I have trained in the automotive field and currently work as a shop foreman. I will be helping you today.

Are you just looking for the honda tree of the concern with possible causes?
Customer: replied 2 years ago.
What problems do thess codes represent? Just want an answer as to a description of the problem represented by the codes. Thanks. ,
Customer: replied 2 years ago.
Relist: Incomplete answer.
For a 2003 Honda CRV, what do codes P1259, P1166 and P1167 mean? What problems do thess codes represent? Just want an answer as to a description of the problem represented by the codes. Thanks.
Expert:  proautotech replied 2 years ago.
Both 1166 and 1167 are related to the air fuel ratio sensor. Most likely replacement of the sensor will correct the problem. The 1259 is almost always a bad oil pressure switch. Sorry for the delay just wanted to verify the information you were looking for. Please take a moment to rate with a positive rating. Negative rating heavily impact my feedback. Thank you!

Code P1259 VTEC System Malfunction (Bank 1)
Causes Based on my experience the problem is Variable Valve Timing & Valve Lift Electronic Control (VTEC) Oil Pressure Switch.
  • VTEC solenoid connector is damaged (check pins for damage, and moisture)
  • VTEC solenoid has failed
  • VTEC switch has failed
  • PCM has failed


Code P1166 Air Fuel Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction

Causes Most common Air Fuel (A/F) Ratio Sensor
  • AFS connector is damaged (check pins for damage, and for moisture)
  • AFS heater control circuit is open, shorted to ground or shorted to voltage
  • AFS heater has failed
  • PCM has failed


Code P1167 Air Fuel Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction
Causes
Air Fuel Ratio (AFR) Sensor
  • AFS heater connector is damaged (check pins for damage, and for moisture)
  • AFS heater control circuit is open, shorted to ground or shorted to voltage
  • AFS heater has failed
  • PCM has failed
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