What does code p1491 mean on an engine?

What Does Code P1491 Mean? The Exhaust Gas Recirculation (EGR) system is used by the Powertrain Control Module (PCM) to recirculate exhaust gases back into the intake manifold of the engine in order to take up space where air and fuel would be.

What does it mean when Honda Odyssey says p1491?

P1491 HONDA Tech Notes In some 1999–2003 Honda Odysseys and 2003 Honda Pilots, the EGR system may become contaminated or clogged. If this happens, the vehicle may hesitate or surge during light acceleration, and the MIL (malfunction indicator lamp)may come on with DTC P0401 (EGR insufficient flow) or P1491 (EGR valve insufficient lift).

When does the EGR solenoid set p1491?

When the PCM pulses the EGR solenoid on to a set location but does not see it reach that set location via the position sensor, code P1491 is set in memory. Code P1491 is a manufacturer specific code, mostly utilized by Honda, Acura and Isuzu.

What to do if DTC p0401 p1491 is stored?

If DTC P0401 or P1491 is stored, or if the engine hesitate or surges, clean the EGR port, install an EGR pipe kit, and clear the code. If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer.

When to use the p0508 idle air control code?

If the engine RPM levels fail to coincide with programmed desired limitations, a code P0508 will be stored and a MIL may be illuminated. Related idle air control system circuit trouble codes include: P0509 Idle Air Control System Circuit High P0511 Idle Air Control Circuit P0518 Idle Air Control Circuit Intermittent

What causes the idle control system malfunction code?

All our repairs are backed by our 12-month / 12,000-mile warranty. P0505 is an OBD-II generic code that the engine control module (ECM) determined the engine idle control system is not managing the idle to stay in specification. The idle is too high or goes too low. What causes the P0505 code?

Why is my EGR valve not setting p1491?

The most likely problem is the EGR valve / solenoid. If the P1491 code stays active and the P1498 does not set, we will need to test the sensor’s / solenoid’s associated circuits. At this point it may be wise to seek assistance from a trained automotive diagnostician.

What does Mil code p1491 mean on Honda Odyssey?

In some 1999–2003 Honda Odysseys and 2003 Honda Pilots, the EGR system may become contaminated or clogged. If this happens, the vehicle may hesitate or surge during light acceleration, and the MIL (malfunction indicator lamp)may come on with DTC P0401 (EGR insufficient flow) or P1491 (EGR valve insufficient lift).

How much does it cost to diagnose Honda code p1491?

The cost of diagnosing the P1491 HONDA code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

How does the Honda p1491 exhaust gas recirculation system work?

P1491 Honda Description. The Exhaust Gas Recirculation (EGR) system reduces Oxides of Nitrogen (NOx). NOx is generated by high combustion temperatures. The EGR system lowers peak combustion temperature by recirculating inactive exhaust gas into the air/fuel mixture, thus reducing NOx emissions.

Labor: 1.0 The cost of diagnosing the P1491 HONDA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour. When is the P1491 HONDA code detected? Low EGR flow control is detected P1491 HONDA Possible Symptoms

What does code p1491 mean on an engine?