What does DTC p0403 mean on an EGR circuit?
If there is, it indicates a problem with the solenoid. The EGR solenoid is actuated with a 12-volt power source, switching the solenoid from the “leaking” position to a closed position when power is present. DTC P0403 most commonly indicates an electrical issue with the solenoid or the electrical connections.
What are the results of the GM EGR valve test?
Check engine light (CEL) will be shining nice and bright. P0401 EGR System Flow Insufficient. P0403 EGR Solenoid Control Circuit. P0404 EGR Open Position Performance. P0405 EGR Position Sensor Circuit Low Voltage. Rough idle. Really bad gas mileage.
What causes the EGR valve to stick closed?
1) Excess oil getting into the intake from the PCV system, or other causes of oil consumption. 2) Poor fuel that does not have good cleaners. 3) Unusual driving habits, especially short trips. 4) The EGR valve is sticking closed, but this should set a different code.
What are the symptoms of EGR solenoid malfunction?
Symptoms vary depending on the position of the EGR solenoid circuit during malfunction. Symptoms may include: Check Engine light. Rough run or misfire on startup, smoothing out as engine warms up. Rough run or misfire when engine hot, yet runs properly on startup. Hesitation to accelerate.
What does p0404 mean on an EGR sensor?
Often times code P0404 does not actually indicate that there is something wrong with the EGR valve itself, but actually that the EGR sensor is telling your PCM that the proper amount of EGR needed to flow back into your cylinders and cool them is not present.
What are the p0403 and p0443 codes?
I am getting 2 codes P0403 and P0443. I replaced both the EGR Valve and EVAP Purge valve. Have Ford questions? Ask a mechanic for answers ASAP
What are the letters on an EGR valve?
Most of the EGR valves will have the letters A thru’ E molded onto the EGR valve’s connector. I’ll be using these same letters for the circuit descriptions below: Ground circuit for EGR valve solenoid. Gray with Black stripe wire. EGR valve pintle position sensor Ground (provided by the PCM). Black wire. EGR pintle position signal circuit.
Is there a problem with the GM EGR valve?
This design (either by intent or incompetence on the part of GM -after all, Ford and other makes don’t have this problem) has made auto repair shops tons and tons of money (before someone sues me… let me tell you that this is just my opinion).