1999 Lexus ES 300 Error Codes: P0171, P0300, P0303, P0305
01-22-18, 07:23 PM
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1999 Lexus ES 300 Error Codes: P0171, P0300, P0303, P0305
Hey guys, just bought a 1999 Lexus ES 300 and am having some trouble with these codes; P0171, P0300, P0301, P0303, P0305.
The car runs perfectly fine around town (no check engine light) when the codes are cleared, however I noticed the codes (check engine light) return, only at higher speeds. The VSC light also comes on while driving and starts to lose power.
The print out from AutoZone recommends replacing the Oxygen sensor.
Where should I start when diagnosing this issues?
Thanks in advance for any guidance,
Jordan
The car runs perfectly fine around town (no check engine light) when the codes are cleared, however I noticed the codes (check engine light) return, only at higher speeds. The VSC light also comes on while driving and starts to lose power.
The print out from AutoZone recommends replacing the Oxygen sensor.
Where should I start when diagnosing this issues?
Thanks in advance for any guidance,
Jordan
Last edited by Jordan95; 01-22-18 at 11:54 PM.
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