Code p0403 what is code P0403 on a lincoln Advitar

SOURCE: 2001 dodge stratus r/t code p0403

Here are possible causes for this code.

• EGR solenoid connector is damaged (check pins for damage, and moisture)
• EGR solenoid control circuit is open or shorted to ground
• EGR solenoid control circuit is shorted to voltage
• EGR solenoid has failed
• PCM has failed

SOURCE: Code Po171, P0174 P0403

PO 171 & 174-are O2 Sensors Codes,forget them,just be sure their screwed in tight. Yes ,they will come loose.
PO303-is a bad COP Coil,on #3 cyl ,may be one issue,very common on all ford products
PO-403 -is EGR related.-That probably is shot, also.

Had all thoses and more, on my Lincoln Ls

A misfire will set many codes,that while not unrelated,are not your issuse. You need to understand the symptom,is not always what caused the codes,or not the cause of the problem.

SOURCE: P0403 engine code is on

here is a good explanation:

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

SOURCE: what does the code p0403

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)