What does engine trouble code p0489 stand for?
What does engine trouble code p0489 stand for?
This is a generic powertrain code, which means it covers all makes/models, 1996-newer. However, specific troubleshooting steps will vary depending on the vehicle. These engine trouble codes refer to a failure in the EGR (exhaust gas recirculation) system. To be more specific — the electrical aspect.
What does p0490 mean on an OBD code?
P0490 is basically identical but it means circuit high as opposed to low. 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 the EGR on a p045c?
Replace the EGR. 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.
How many wires are there in the p045c control circuit?
There are 5 wires, the two outside wires supply battery voltage and the ground. The center three wires are the potentiometer used to signal the computer as to the amount of EGR flow. The center terminal is the 5-volt reference terminal. Inspect the connector thoroughly for pushed out pins, corrosion or bent pins.
What does a stored code p0488 mean?
A stored code P0488 means that the powertrain control module (PCM) has detected a discrepancy between the actual position of the exhaust gas recirculation (EGR) valve and the desired throttle position. The PCM uses input signals from the throttle position sensor (as well as the vehicle speed sensor…
What’s the problem with the p0488 exhaust gas recirculation system?
P0488 – Exhaust Gas Recirculation (EGR) System Throttle Position Control Range/Performance Trouble Code Fault Location Probable Cause P0488 Exhaust gas recirculation (EGR) system, Wiring, poor connection, ECM
Why is my p0488 EGR throttle control valve not working?
If all prior tests have passed and you continue to get a P0488, this would most likely indicate a failed EGR throttle control valve, although a failed PCM could not be ruled out until the EGR throttle control valve had been replaced.
What causes an illuminated malfunction indicator lamp p0488?
Variations between perceived EGR system performance and TPS position, over a set period of time, will result in a stored code P0488 and possibly an illuminated malfunction indicator lamp. What are the common causes of code P0488 ?
