What does code P00E3 mean?

Q: What does code P00E3 mean?

Exhaust Heat Exchanger Exhaust Bypass Valve A Stuck Open. P00E3 indicates that the powertrain control module has detected the exhaust heat exchanger bypass valve is stuck in the open position when it should be closed or modulating. The exhaust heat exchanger recovers waste heat from the exhaust stream, typically to speed cabin or engine warm-up, and the bypass valve routes exhaust gas around or through that exchanger; a stuck-open valve lets exhaust bypass the exchanger when the computer commands it closed, reducing heat recovery and potentially affecting emissions and fuel economy.

DTC codes / P00xx · Fuel and air metering and auxiliary emission controls / P00E3

P00E3Exhaust Heat Exchanger Exhaust Bypass Valve A Stuck Open

P00E3 indicates that the powertrain control module has detected the exhaust heat exchanger bypass valve is stuck in the open position when it should be closed or modulating. The exhaust heat exchanger recovers waste heat from the exhaust stream, typically to speed cabin or engine warm-up, and the bypass valve routes exhaust gas around or through that exchanger; a stuck-open valve lets exhaust bypass the exchanger when the computer commands it closed, reducing heat recovery and potentially affecting emissions and fuel economy.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaFuel and air metering and auxiliary emission controls

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.