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Marty
Marty, Bosch Master Tech
Category: Honda
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Experience:  Bosch Certified Master Technician
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2004 Honda: intermitten..it just be the O2 sensor heater..blown fuse

Resolved Question:

2004 Honda CRV with intermitten p0134 code with no symptoms of a bad O2 sensor. Could it just be the O2 sensor heater or would that generate it's own code? If it is the heater could it be just a blown fuse and if so which fuse? Is it safe to drive with this code as long as there are no symptoms or could I be damaging the Cat converter?
Submitted: 5 years ago.
Category: Honda
Expert:  Marty replied 5 years ago.
HiCustomer a P0134 is most likely going to be a faulty sensor. The connections at the sensor and at the ecm should be inspected first. It is not a heater fault. It is not a good idea to drive the vehicle with a faulty sensor, even without any noticeable symptoms. Yes you could be damaging the catalytic converter.
Customer: replied 5 years ago.

The OEM part is very expensive (>$320 from the dealer). Are there any universal O2 sensors that work well for this car? Also, is it common for these to go out on a vehicle with only 37,000 miles.

 

Are there any other places I can check, such as vacuum or exhaust leaks?

Expert:  Marty replied 5 years ago.
The sensors have a high failure rate. If you can find a Denso direct replacement air/fuel ratio sensor you could try one of those. A universal sensor is not recommended. Vacuum leaks and exhaust leaks can affect the operation of the sensor and shouldn't be disregarded but you would normally have other codes associated with them. The sensor should also be checked for looseness in the manifold but it would be unlikely for it to be loose.
Marty, Bosch Master Tech
Category: Honda
Satisfied Customers: 49168
Experience: Bosch Certified Master Technician
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