P1599 and p2138? - 2006 Saturn Vue

without going from bumper to bumper ????? You need to see what's missing after it dies , spark or fuel pressure . Don't guess ,test an if you don't know how ,take it to a qualified repair shop. Your fixated with vapor lock . Crank sensor , ignition module .

DTC P1599 will set if the PCM has detected an engine stall condition when:
• The engine is in run mode.
• The ignition voltage is present on circuit 439.
• The crankshaft position (CKP) pulses at the PCM are NOT detected.
DTC P1599 is a type D DTC.
The powertrain control module (PCM) has the ability to set a diagnostic trouble code (DTC) if the engine stalls when the ignition has not been turned OFF. This DTC may aid in intermittent diagnosis of a customer complaint of intermittent engine stall. The scan tool Failure Record information can be duplicated under the same stall conditions in an attempt to reproduce the occurrence. Since DTC P1599 is a type D DTC, the PCM will not command the malfunction indicator lamp (MIL) or SERVICE telltale On. This DTC can set due to driver error. For example, a vehicle equipped with a manual transaxle in which the clutch was released too quickly causing the engine to stall, will set DTC P1599.

P1406 SATURN 5,974 Views EGR Valve Pintle Position Circuit

Read more: https://www.autocodes.com/make/saturn/13
P1599 SATURN 21,379 Views Engine Stall Or Near Stall Detected

Read more: https://www.autocodes.com/make/saturn/13
both codes point to needing a new EGR valve

Your vehicle has drive - by - wire , electronic throttle control . P2138 Gm Accelerator Pedal Position Sensor 1 2 Correlation

There are videos on youtube on this P2138 APPS Accelerator Pedal Position Sensor Fix 3 5L Chevrolet Impala

[PDF]Dodge Motor Company Group Diagnostic Trouble Codes

edgeproducts.com/app/uploads/.../customer_support_article-pdf-39.pdf
P1xxx Manufacturer codes for additional emission system function; not required but reported ... Dodge DTC Codes. 2. P0001 Fuel ... P0030 1/1 02 Sens Heater Relay Malfunction. P0031 HO2S ..... P0601,PCM Internal Ctrller Failure ..... P1599 A/C Press Sens Volts Too Low ... P1684 Battery Disconnected in the last 50 Starts.

One is a multiple misfire and the o2 sensor

Before you replace the sensor, you should check the voltage circuit for the heater. The sensor may be fine and not getting voltage to the heater inside.
The code 1599 just means the engine has stalled at some point. It does not tell you why or how.
I doubt the two codes are related.

p1599 refers to TPS (throttle position sensor) Stop by a local parts store (Advance, Autozone, etc) and have them do a free fault scan for you.

P2138 is Throttle Pedal Position Sensor/ Switch D / E Voltage Correlation. Replace the Throttle Pedal Position Sensor/Switch.Remember to have the set code Cleared from the cars computer, this will turn off the check engine light and reset it. Good Luck and have a good XMASS.

There is a GM Technical Service Bulletin (TSB) on this issue, below is a summary;

#07-06-04-019A: Intermittent MIL/SES, DTC P2138 with Reduced Engine Power (Repair Instrument Panel (IP) to Body Harness Connector)

Models: 2005-2008 GM Passenger Cars and Light Duty Trucks (Including Saturn)
2005-2008 HUMMER H2
2006-2008 HUMMER H3
2005-2008 Saab 9-7X

Condition

Some customers may comment on an intermittent MIL/SES light Illuminated with a message center or an indicator that displays Reduced Engine Power. DTC P2138 - Accelerator Pedal Position (APP) Sensor 1-2 Correlation may be set. The voltage difference between APP sensor 1 and APP sensor 2 exceeds a predetermined value for more than a brief period. Refer to DTC P2138 in SI for further diagnostics.

Cause

On some vehicles, the IP to body harness connector, which carries the APP signal to the ECM/PCM, is located in the left hand kick panel area or inside the IP. Water intrusion into these areas could cause an electrical short in the APP circuits setting a P2138 code.

Correction

Note: Make sure that no add-on/aftermarket equipment is electrically connected to the APP signals or to the other ECM/PCM five volt reference or return lines. These can generate false P2138 and/or other ETC System DTCs. If there are other engine DTCs besides P2138, such as MAP sensor faults (i.e. P0107, P0108), resolve these first before attempting to diagnose P2138 DTCs.

Important: Refer to DTC P2138 in SI to confirm that the ETC pedal is operating correctly.

Locate the IP to body harness connector, which may be located in and around the left hand kick panel area or inside the IP. Check to see if there is a water leak into the area and repair as necessary. Use a water hose to determine the source of a water leak and effectiveness of repair. Some examples of potential water leaks are: A-pillar seals, sunroof drain lines (if so equipped) and windshield/cowl sealing. Finally, repair or replace the IP to body harness connector, making sure no corrosion or debris is left on or between the terminals.

P1599 IS A STALLING ISSUE COULD BE BAD GAS / BAD FUELPUMP DIRTY FUEL FILTER
DISCONNECT BATTERY AND SEE IF THE LIGHT COMES ON AGAIN
U2107 HAS SOMETHING TO DO WITH THE COMPUTER LOOSING POWER AT THE BODY MOUNTS CHECK CABLES AND GROUND STRAP