What does fault code p0490 on OBD II mean?
What Does Code P0490 Mean? OBD II fault code P0490 is a generic code that is defined as “Exhaust gas recirculation (EGR) system –“A” circuit high” and is set when the PCM (Powertrain Control Module) detects an abnormally high voltage in the EGR (Exhaust Gas Recirculation) valve’s control system.
What does p0490 EGR control circuit ” a ” mean?
Codes P0490 EGR control circuit “A” means no high voltage change to indicate the EGR is opening or closing. P0489 is basically identical but it means circuit low as opposed to high.
What does p0489 mean on a control circuit?
P0489 is basically identical but it means circuit low as opposed to high. Unleaded fuel is prone to producing Nox when under extreme temperatures in the engine’s cylinders. The EGR routes a regulated amount of exhaust gas back into the intake manifold.
How do you replace a ground wire on a p045c?
Pull the connector off the EGR and with the key on and the engine off, probe both outer terminals for power. Make a note of which one has 12-volts and replace the connector. Place a paper clip in the end terminal that had no power, this is the ground terminal. Attach the jumper to the paper clip. Ground the jumper wire.
What Does Code P0490 Mean? OBD II fault code P0490 is a generic code that is defined as “Exhaust gas recirculation (EGR) system –“A” circuit high” and is set when the PCM (Powertrain Control Module) detects an abnormally high voltage in the EGR (Exhaust Gas Recirculation) valve’s control system.
Codes P0490 EGR control circuit “A” means no high voltage change to indicate the EGR is opening or closing. P0489 is basically identical but it means circuit low as opposed to high.
P0489 is basically identical but it means circuit low as opposed to high. Unleaded fuel is prone to producing Nox when under extreme temperatures in the engine’s cylinders. The EGR routes a regulated amount of exhaust gas back into the intake manifold.
Pull the connector off the EGR and with the key on and the engine off, probe both outer terminals for power. Make a note of which one has 12-volts and replace the connector. Place a paper clip in the end terminal that had no power, this is the ground terminal. Attach the jumper to the paper clip. Ground the jumper wire.