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check engine light
Sent to Car Experts July 24 03:18 PM

ihave a 99 ford explorer V6. the check engine light has been on for a month. no driveablility problems. Got a code 1151 --fuel mixture, from Autozone. Can you help me with this and get this repaired. Thank you,
Ed

Customer (name blocked for privacy)
Status:  Closed   Value: $5
Answer
July 24 3:24 PM (6 minutes and 4 seconds later)
         
ACCEPTEDCheck Mark

P1151 Lack Of HO2S-21 Switch Indicates Lean (Ford)

The upstream sensor on the driver's side is reading lean. It could be a bad sensor or it may really be lean on that side. My guess is the sensor is bad. You can test it with a DVOM, by reading the return voltage while artificially enriching it.



Edited by Hammer Time on July 24 2005 at 3:27 PM
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