P1421 Diagnostic Trouble Code Discussion for April 2017
Cold Start Emission Reduction Strategy Monitoring
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| Help Request | Posted | |
| 1999 Subaru Legacy Limited 30th Anniversary 2.5L MIL Lamp on VIN: 4S3BG6855X P1421: Exhaust Gas Recirculation High Input. ... reluctant to replace an ECM without undeniable proof. I don't have that. I've done basic checks of clear intake and exhaust passages and tubing. This code specifies the electrical portion of the EGR. DTC P1421: EXHAUST GAS RECIRCULATION CIRCUIT HIGH INPUT... |
April 27, 2017 |
