97 ES300 check engine light
04-23-13, 01:06 PM
#1
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97 ES300 check engine light
The test came back PO135 02 heater circuit bank 1 sensor 1. My question is if I buy this and install can it still be other problems? Car has 250,000 miles and I hear a small exhust noise like maybe a gasket? Thanks!
04-23-13, 01:42 PM
#2
Yes, it can be other components that cause your P0135 as that circuit goes through the throttle position sensor, relays, fuse, etc. Bank 1 sensor 1 is the O2 sensor between the engine and firewall. The sensor is not reaching temperature as quickly as it should.
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