P0403 code - 2005 Dodge Caravan

First, that code is P0403 and it is related to the EGR valve, the PCM is the power control module and it is another term that is used for the computer in the engine. BUT you did not post the year make and model so that is all that we can say about that.

P0403 - OBD-II Trouble Code - RepairPal

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Definition of error code P0403 - Exhaust Gas Recirculation Circuit Malfunction. ... TheEGR OBD-II monitor deploys a set of test criteria that are usually run ... Problem, a Plugged or Restricted System, or a Defective Feedback Device ... Nissan ' Volkswagen ' Chrysler ' Lexus ' Mercury ' Cadillac ' Hyundai ' Buick ' Volvo ' AudiMissing: tucson ‎sayes

OBD-II Trouble Code: P0403 Exhaust Gas Recirculation ...

www.obd-codes.com/p0403

Causes. The causes for a P0403 EGR code could be any of the following: ... If the solenoid does operate, you'll have to check current draw on the ground circuit.Missing: huyandai ‎tucson ‎device ‎sayes

Egr P0403 Fault Code Help - Hyundai Forums : Hyundai Forum

www.hyundai-forums.com/...xg.../102478-egr-p0403-fault-code-help.ht...

trouble code P0403 - EGR FLOW CIRCUIT MALFUNCTION

Here is a like to what this code.
P0403 Exhaust Gas Recirculation Circuit Malfunction

What the P0403 code means. P0403 is an OBD-II generic code that indicates that the engine control module (ECM) has detected the engine exhaust gas recirculation (EGR) circuit has malfunctioned. The ECM detected a short or open circuit in the EGR vacuum control solenoid or wiring to the solenoid.

if you have a obd11 scanner, clear the codes and drive the vehicule for a while ,a good half an hour or so above 30 mph. this will give your onboard computer a chance to relearn system settings.if the code comes back there could be some other sensor malfunctioning or a problem with the onboard computer.ex corroded connections or broken pins.

P0403 - Exhaust Gas Recirculation Circuit Malfunction

Causes for DTC P0403:
- Harness or connectors (EGR volume control valve circuit is open or shorted.)
- EGR volume control solenoid valve
- EGR temperature sensor and circuit

Solutions for DTC P0403:
- Repair EGR harness or connector
- Replace EGR volume control solenoid valve
- Replace EGR volume control valve


P1784 - Transmission Mechanical Failure (First and Reverse)

Causes for DTC P1784:
- Not waiting to allow transmission to engage gear before accelerating.
- Dirty fluid / clogged transmission filter

Solutions for DTC P1784:
- Allow gears to engage before acceleration
- Preform transmission service (flush & filter)

here is a good explanation:

http://www.obd-codes.com/p0403

P0403 - Exhaust Gas Recirculation Circuit Malfunction

Website: http://www.obd-codes.com/p0403