Using my OBD II on 2000 honda prelude trouble codes PO401 & (PO401 pd) all reads MIL on, monitors, 1 INC, EVAP, 7 ready, MISFIRE, FUEL, COMP, CATLYST, 02 sensor, 02 HTR, EGR. Will be cleaning out EGR, BUT do I need to replace my Solenoid? My prelude stalls and ideals out of first gear. (Autotranny). Is this stall caused by these trouble codes? Also with 1 pending code, what do you recomend? I ran car and used OBD II a 2nd time and only change was (0 inc) and 8 (ready).

codes are available on line free.
https://www.carparts.com/blog/p0440-code-evaporative-emission-control-system-malfunction-large-leak/

You need a good auto-electrician to diagnose and fix that lot!

What the P2422 code means. The P2422 diagnostic trouble code is an indication that the vent valve of the evaporative emissions control system (EVAP) is stuck closed. The EVAP system reduces harmful pollutants, generated by the engine combustion process, from being expelled into the environment.P2422 OBD-II Trouble Code: Evaporative Emissions Control ...
https://www.yourmechanic.com/article/-p2422-obd-ii-trouble-code-evaporative-emissions-control-system-evap-vent-valve-stuck-closed-by-jamahl-walker#:~:text=What%20the%20P2422%20code%20means,being%20expelled%20into%20the%20environment.


P0651 HONDA Code - Sensor Reference Voltage 'B' Circuit ...
https://www.engine-codes.com > p0651_honda'P0651 HONDA code possible causes · Faulty Engine Control Module (ECM) · ECM harness is open or shorted · ECM circuit poor electrical connection · Shorted sensor on ...
https://www.engine-codes.com/p0651_honda.html

P1454 HONDA Code Fuel Tank Pressure Sensor Range ...
https://www.autocodes.com > p1454_hondaOct 9, 2016 - 'P1454 HONDA code possible causes · Faulty Fuel Tank Pressure (FTP) Sensor · Fuel Tank Pressure Sensor harness is open or shorted · Fuel Tank ...
https://www.autocodes.com/p1454_honda.html


The P2127 code means that the throttle or pedal position sensor switch E has a low input. The pedal position sensor is a sensor found on the gas pedal. The sensor tells the ECU when the gas pedal is depressed and how far it is depressed.

P2127 OBD-II Trouble Code: Throttle/Pedal Position Sensor ...

The P2138 trouble code indicates that the Engine Control Module has detected a malfunction within the D and/or E circuits of the throttle position sensor.

P2138 OBD-II Trouble Code: Throttle/Pedal Position Sensor ...

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

scroll down to your code and open code. gives symptoms and possible fixes

Only 1 code (p1401) means EGR Temperature Sensor problem. Bad Sensor or EGR valve may need to be replaced. Autozone has some ways to test your sensor and egr valve.
If you do have a bad sensor it is about $170 average. If you have a bad EGR valve it is about $150 average.
Hope this helps!!! Let me know if it does!
-Kevin from KCG InnovationsAuto specialist

P0302 is a misfire in cylinder #2. When was the last time you changed spark plugs? That's the most common cause of a misfire.

The drive cycle is as follows
For all OBD2 VW's

OBD-II Drive Cycle Stages
The OBD-II Drive Cycle is an eight-stage course, as illustrated in the
chart on page 3. An explanation of each step is provided below.
Stage 1: Cold Start-The ECM determines the presence of a cold start
by comparing the engine coolant temperature to the ambient air
temperature during startup. The engine is considered cold when:
• Engine coolant temperature is below 122°F (50°C).
• Engine coolant and intake air temperatures are within 11°F (6°C) of
each other at startup.
During this period, the O2S heater, misfire, AIR, fuel system, and EVAP
monitors run.

Stage 2: Idle 2½ Minutes-Turn the air conditioning (A/C) and
headlights on to help the misfire monitor-the additional electrical loads
help even out combustion pulses. During this period, the O2S heater,
AIR, EVAP, misfire, and possibly fuel system (if operating in closed loop)
monitors run.

Stage 3: Accelerate-Prior to accelerating, turn off the A/C and
headlights (if possible). Open the throttle halfway until you reach
55 MPH (89 KPH). During acceleration, the misfire, fuel system, and
EVAP monitors run.

Stage 4: Steady State Cruise-During this portion of the cycle, the
O2S, AIR, EGR, EVAP, misfire, and fuel system monitors run.

Stage 5: Decelerate-Gradually coast down without applying the
brakes. Also, on manual transmission vehicles, remain in high gear and
do not press the clutch. During this period, the EGR, EVAP, and fuel
system monitors run.

Stage 6: Accelerate-Apply ¾ throttle until reaching 60 MPH (97 KPH).
During acceleration, the misfire, fuel system, and EVAP monitors run.

Stage 7: Steady State Cruise-During this period, the CAT, O2S, AIR,
EGR, EVAP, misfire, and fuel system monitors run.

Stage 8: Decelerate-Gradually coast down without applying the
brakes. Also, on manual transmission vehicles, remain in high gear and
do not press the clutch. During this portion of the Drive Cycle, the EGR,
EVAP, and fuel system monitors run.

You can try this a couple times, but if it doesn't work you should go to a VW specialty shop like the dealer or a shop that does mostly European cars and they can use the scan tool to force the car through readiness.

Here is the drive cycle procedure for that vehicle, and let me know if you require any further assistance.


Running an OBD-II Drive Cycle

The purpose of the OBD-II drive cycle is to run all of the onboard diagnostics. The drive cycle should be perfomed when any trouble codes are erased from the PCM or if the battery was dis-connected. Performing the drive cycle will reset the monitors so that any further trouble codes can be detected.

The OBD-II system drive cycle begins with a cold start with the coolant temperature below 120 degrees F. and the coolant and the air temperature sensors within 10 degrees of each other. (The ignition key must not be "on" or in the "Run" position until the cold start or the heated O2 sensor diagnostic might not start)

1. As soon as the vehicle starts up, idle the engine in drive for two and a half minutes with the AC and the rear defrost on if equipped with a rear window defroster. The OBD-II will check the O2 sensor circuits, the air pump, and the EVAP purge.

2. After the two and a half minutes turn off the AC and the rear window defrost, and then accelerate to 55 mph at half throttle. OBD-II checks for any ignition mis-fires, fuel trim, and canister purge.

3. Hold steady at 55 mph for three minutes. OBD-II monitors the EGR system, the air pump, the O2 sensors and the canister purge.

4. After the three minutes decelerate down to 20 mph without using the brakes or the clutch. OBD-II checks the EGR and the purge functions.

5. Accelerate back up to 55 mph at half throttle. OBD-II checks for mis-fires, fuel trim, and purge functions again.

6. Hold steady at 55 mph for five minutes. OBD-II will monitor catalytic converter efficiency, for any mis-fires, EGR function, fuel trim, O2 sensor operation, and purge functions.

7. Decelerate to a stiop without using the brakes or the clutch. OBD-II makes a final check of the EGR system and the canister purge functions.

A SCAN TOOL WILL TELL YOU WHAT CYLINDERS MISFIRING.THATS QUICK WAY TO CHECK.CHANGE FUEL FILTER AND CLEAN FUEL INJECTORS BY FILLING GAS TANK AND PUTTING A BOTTLE SEA FOAM IN TANK.MISFIRING LACK OF POWER AND STUMBLING ON ACCELERATION MOST TIME CLOGGED FUEL INJECTORS WILL CAUSE THOSE PROBLEMS.

Trouble Code: P0441 (2.0L L4 VIN C Auto)
EVAP Purge Flow Monitor Fault Print this code data Number of Trips to Set Code: 2
OBD II Monitor Type: CCM Details
Indicators: MIL Details

• EVAP Details

Trouble Code Conditions:
Engine at idle speed in closed loop for 200 seconds, BARO Sensor signal less than 8,000 feet, ECT Sensor more than 160ºF, no Low Fuel, MAP Sensor signal less than 23.7" Hg, and the PCM did not detect any purge flow through the EVAP system during this test.

Possible Causes:

• EVAP purge solenoid vacuum line loose, leaking or restricted
  
• EVAP purge solenoid stuck leaking, stuck open or stuck closed
  
• EVAP purge vacuum line to canister leaking or disconnected
  
• EVAP canister leaking, damaged or has failed
  

2005 Dodge Neon - All Configurations - P0441

Hello I need a help.
I have 1999 lincoln town car 4.6L V8.They have check engine light on. P 0303 cylinder 3 missfire.
I was changed spark plugs,fuel filter. check compression test 150psi. fuel pressuer 50.
swiching cylinder 1 to 3 fuel injector and coil. but they still have engine code