2000 Honda Accord L4 MIL Comes On With DTC P1149

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Filed Under (Honda) by admin on 28-01-2011

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SYMPTOM The MIL is on, and DTC P1149 (air/fuel ratio sensor range/performance problem) is set. PROBABLE CAUSE Under certain driving conditions, the ECM/PCM sets a false DTC P1149. CORRECTIVE ACTION Replace the ECM/PCM. PARTS INFORMATION DIAGNOSIS Connect the PGM Tester to the vehicle’s DLC (data link connector), and check for DTCs. • If DTC P1149 is stored, go to REPAIR PROCEDURE. • If another DTC is stored, go to the appropriate troubleshooting procedure in the service manual. REPAIR PROCEDURE Replace the ECM/PCM with the appropriate part listed under PARTS INFORMATION. For replacement information, see How to Remove the ECM/PCM for Testing on page 11-4 of the 1998–01 Accord Service

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