Thread: Freeze Frame Data

That code is not what's bothering me. There is nothing wrong with my EGR. I just unplugged it for a short time, so that's why it's popping up. I just wanted to know what those numbers meant. If they are in the right area.

You mention that you unplugged the EGR and took that out of the loop for the problems you are having. Then you say here's some freeze frame data Which is often worthless because we don't know when it was stored or for which code. And you mention that you plan to do a bunch of work unrelated to any of the codes you are getting.

Why pull the codes if you are going to shoot in the dark? Seems that it would be more entertaining if you starting working on it w/o getting the codes. At least that way you can say you have no idea if any of the work will help, before you do it.

The way you are going about it is kinda silly. See codes are stored when faults are visible to the pcm. There's this great database of knowledge called the internet that we can search to get stuff like FSM information. Because often the code name/number doesn't really give much credit to the actual problem. Heck..it can lead us in the total wrong direction.

So w/o knowning what issues you are having. I googled P0403 for you. If you are having a vacuum leak issue or something along those lines, you probably didn't help anything (which you noted) by unplugging the EGR. Because according to the info I found, unplugging it doesn't unstick it.

P0403 - Exhaust Gas Recirculation Circuit Malfunction

OBD-II Trouble Code Technical Description

Exhaust Gas Recirculation Circuit Malfunction
What does that mean?

The Exhaust Gas Recirculation (EGR) system is controlled by a vacuum solenoid. The solenoid is supplied ignition voltage. The Powertrain Control Module (PCM) controls the vacuum solenoid by grounding the control circuit(ground) or driver. The primary function of the driver is to supply ground for the object that is being controlled. Each driver has a fault circuit that the PCM monitors. When the PCM turns a component on, the control circuit voltage is low, or close to zero. When the component is turned off, the voltage on the control circuit is high, or near battery voltage. The PCM watches for these conditions, and if it doesn\'t see the proper voltage at the proper time, this code is set.
Potential Symptoms

Usually a fault in the control circuit, will leave no noticeable symptoms other than the Malfunction Indicator Lamp (MIL) illumination. However, if the EGR control solenoid is stuck open due to debris, etc. the code may be accompanied by misfire under acceleration, rough idle, or engine dying altogether.
Causes

The causes for a P0403 EGR code could be any of the following:

• <LI itxtHarvested="0" itxtNodeId="46">Bad EGR solenoid <LI itxtHarvested="0" itxtNodeId="45">Excessive resistance in control circuit (PCM controlled ground) due to an open, chafing or damage to the harness <LI itxtHarvested="0" itxtNodeId="44">Poor connection at the EGR solenoid harness (worn or loose pins) <LI itxtHarvested="0" itxtNodeId="43">Water intrusion at the EGR solenoid harness <LI itxtHarvested="0" itxtNodeId="42">Blockage in EGR control solenoid holding solenoid open or closed causing excessive resistance <LI itxtHarvested="0" itxtNodeId="41">Loss of supply voltage to EGR solenoid
• Bad PCM

Possible Solutions

With the ignition on and engine off, use a scan tool to activate the EGR solenoid. Listen or feel for a clicking, indicating that the solenoid is operating.
If the solenoid does operate, you'll have to check current draw on the ground circuit. It should be less than one amp. If it is then the problem is intermittent. If it isn't then there is excessive resistance in the circuit and perform the following
1. When it's activated see if you can blow lightly through it. IF you can\'t there may be a blockage causing excessive resistance. Replace EGR solenoid as needed. If there is no blockage, disconnect the EGR solenoid and the PCM connector containing the EGR solenoid control circuit. Using a digital Volt-Ohm meter (DVOM) check resistence between the control circuit and battery ground. It should be infinite. If it isn't, then there is a short to ground on the control circuit. Repair the short to ground and retest as needed.
2. If the solenoid doesn't click as it should, disconnect the EGR solenoid connector and connect a test light between the two wires. Using the scan tool, command the EGR solenoid on. The light should light up. If it does, replace the EGR solenoid. If it does not perform the following: a. Check for 12 Volts on the ignition supply voltage to the solenoid. If it isn't present, inspect the supply circuit for an open, or a short due to chafing or breakage and re-test. b. If it still doesn't operate: then manually ground the EGR solenoid control circuit. The light should light. If it does, repair open in EGR solenoid control circuit and re-test. If it doesn't, replace EGR solenoid.

Holler if you need a hand looking up those other codes. You don't mention which TPS code it is..

I didn't realize that freeze frame data was for a specific code. ^^ Oh well. Thanks for the info.