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P2106 P0651 Chevrolet Aveo5

Found an uncanny fix to this. If you cant seem to pinpoint any issues in your 5v circuitry engine sensors, try this: There's 4 mounting screws on the Accelerator Pedal Position Sensor (not the pedal itself, the sensor), if for any reason they become even slightly loose, the steel rod mechanism inside the {pedal} wont make full contact with the slot inside of the {sensor}, giving you the error in voltage. So, loosen each screw just a bit, and then tighten them until they're really snug. Try this before buying a new throttle body or pedal. Note: If adjusting the sensor(s) does not work, try spraying a bit of throttle body cleaner on the ports of your 5v reference circuit; Seems as though this code, along with (P0651) does not have to directly corelate your you Accelerator Pedal Position Sensor, nor the Throttle Position Sensor. I can say this with confidence, as even after installing the new Throttle Body: initially it ran fine, though this probably had something to do with the ECM trying to learn of the new part installed..rather than the installation itself;...because as you may know it, a few hours later the same codes reappeared (P2106) (P0651). *Buy a voltmeter* ANY port in your 5v reference circuit can cause this and it can be as simple as cleaning it to fix. Don't rush to get your ECU reprogrammed, unless your OBD II picks up specific codes related to.

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Larry Ng

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  • Chevrolet Master
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Post a problem,?
there are zillion of them. 1000s for sure.
also fixing cars with new parts prevents getting stranded in the snow at 1am. so how things are fixed is based on how serious you drive the car. (and how far) (damaged wires can fail later after being jury rigged.

drive by wire DBW or throttle by wire, will fail,
any time the 4 throttle sensors do no agree.. ( all 4)
for any reason what so ever. outputs , grounds or 5vdc power.
or worse Intermittent. or only fails hot. see?
the DTC only tells you it failed, a tech uses a meter to test it or scope..
some shops (more serious) replace it all, TB and Pedal Assembly
labor is expensive for sure 2 or 3 comebacks and the owner stranded 3 time 3 times towed to a shop, every time car in limphome 20mph max. (and no freeway/turnpike use that slow)
this is just one idea here,
there are ways to fix wires that fail using RTV inside heat shrink tubing and soldered perfect.some use tape and it fails next week.

Posted on Nov 26, 2022

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2012 Honda Civic codes P2138, P2127, P1454, P0651 & P2422 all on, & car goes into limp mode after it's rained. If it's dry for a few days, the car drives as normal then acts up again after it rains?

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 ...
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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 ...
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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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1helpful
1answer

I own a 2008 GMC Envoy Denali, 2WD. Yesterday the engine would barely idle and numerous lights on the dash came on including the check engine light. I had a friend check the diagnostic codes and it came up...

Five days prior to this, the battery had to be replaced. The engine was started without the pause for two minutes ?????? Where do you people come up with some of this stuff ? Pausing for two min. before starting has nothing to do with it . DTC P0651: 5-Volt Reference 2 Circuit
Some of the engine sensors on your vehicle work off of a steady 5 volt supply by the PCM - engine computer . One of these sensors is short internally bring down the PCM .
Circuit
Short to Ground
Open/High Resistance
Short to Voltage
Signal Performance
Accelerator Pedal Position (APP) Sensor 1 5-Volt Reference 2 Circuit
P0651
P2122
P0651
--
Accelerator Pedal Position (APP) Sensor 2 5-Volt Reference 1 Circuit
P0641
P2127
P0641
--
Air Conditioning (A/C) Refrigerant Pressure Sensor 5-Volt Reference 1 Circuit
P0641
P0532
P0641
--
Camshaft Position (CMP) Sensor 5-Volt Reference 1 Circuit
P0641
P0340
P0641
--
Engine Oil Pressure (EOP) Sensor 5-Volt Reference 1 Circuit
P0641
P0522
P0641
--
Fuel Tank Pressure (FTP) Sensor 5-Volt Reference 1 Circuit
P0641
P0452
P0641
--
Manifold Absolute Pressure (MAP) Sensor 5-Volt Reference 1 Circuit
P0641
P0107
P0641
--
The Crankshaft Position (CKP) Sensor 5-Volt Reference 2 Circuit
P0651
P0335
P0651
--
Throttle Position (TP) Sensor 1 and 2 5-Volt Reference 2 Circuit
P0651
P0122, P0222
P0651

That's why it wasn't running good ,an lights lit on the dash. Your best bet , take it to GMC dealer .
No where in GM service info does it say after replacing the battery that you need to wait two min. before starting .
Position the positive battery cable (1) to the battery.
Tighten the positive battery cable bolt.
Tighten
Tighten the bolt to 15 N·m (11 lb ft).
Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.
0helpful
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2007 cobaltpo651 circuit b how do i trll which is circuit b

DTC P0651: 5-Volt Reference 2 Circuit First off do you know what computer reference voltage is ? Your vehicle has 2 reference voltage circuits . This reference voltage is used to power engine sensors .
Diagnostic Fault Information
Circuit
Short to Ground
Open/High Resistance
Short to Voltage
Signal Performance
Accelerator Pedal Position (APP) Sensor 1 5-Volt Reference 2 Circuit
P0651
P2122
P0651
--
Accelerator Pedal Position (APP) Sensor 2 5-Volt Reference 1 Circuit
P0641
P2127
P0641
--
Air Conditioning (A/C) Refrigerant Pressure Sensor 5-Volt Reference 1 Circuit
P0641
P0532
P0641
--
Crankshaft Position Sensor 5-Volt Reference 2 Circuit
P0651
P0335
P0651
--
Fuel Tank Pressure (FTP) Sensor 5-Volt Reference 1 Circuit
P0641
P0452
P0641
--
Intake Camshaft Position Sensor 5-Volt Reference 1 Circuit
P0641
P0340
P0641
--
Manifold Absolute Pressure (MAP) Sensor 5-Volt Reference 1 Circuit
P0641
P0107
P0641
--
Secondary Air Injection (AIR) Solenoid 5-Volt Reference 2 Circuit
P0651, P2432
P2431
P0651, P2431
--
Throttle Position (TP) Sensor 1 5-Volt Reference 2 Circuit
P0651
P0122
P0651
--
Throttle Position (TP) Sensor 2 5-Volt Reference 2 Circuit
P0651
P0222
P0651
--

How to check the 5v reference circuit for short to ground Cadillac
0helpful
1answer

What are the probable causes of DTC P0651?

http://www.2carpros.com/questions/chevrolet-tahoe-2004-chevy-tahoe-engine-stalls-has-p0651-service-engine-cod
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2005 Grand Marquis multiple codes.

Ford P061B Diagnostics Common Causes and Checks

P2106 Diagnostic Aids: This DTC is an informational DTC and can be set in combination with a number of other DTCs which are causing the FMEM. Diagnose any accompanying powertrain DTCs first. For Crown Victoria, Expedition, Explorer, F-150 4.6L and 5.4L, Grand Marquis, LS, Mustang 4.6L automatic, Thunderbird, and Town Car with only P2106, repair any ABS DTCs, ABS related DTCs in other modules or vehicle communication concerns using the appropriate section of the Workshop Manual. Do you know how to diagnose a faulty MAP ? videos on youtube .
P0109 - Manifold Absolute Pressure (MAP/BARO) Sensor Intermittent Description: The sensor signal to the powertrain control module (PCM) is failing intermittently. Possible Causes:
  • Loose electrical connection.
  • Damaged MAP sensor.
Diagnostic Aids: Check the harness and connection. Application Key On Engine Off Key On Engine Running Continuous Memory Vehicles with an EGR system module (ESM) GO to DM13 All others GO to DM22
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TROUBLE CODE P2106

p0720 is the output shaft speed sensor for the transmission. If the sensor isn't faulty you need to check the wiring for opens and shorts. If that checks out than I think your transmission is not good. the p2106 is a limp mode code. Correct me if I am wrong anyone. this post is six years old so I am sure they found the answer and I would like to know if I am correct.
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I have a 2003 Ford Explorer Sport Trac. My automatic headlights and auto dimming review mirror are not working. No fuses inside the cab of the truck are blown and dont know which ones under the hood...

The autolamp system, controlled by the vehicle security module, supplies voltage to the same circuits used by the headlamp switch to power the exterior lamps when low light conditions are detected.
Anyone else have or have fixed this problem some help please???? What fixed someone else's vehicle probably won't fix your's .Electronic's involved . Using service repair info. , wiring diagram's an testing the electrical circuits is how professional Technician's fix electrical system problems , not guessing or looking for magical fixes on web sites or forum's.
Visual Inspection Chart Mechanical Electrical
  • Headlamp switch
  • Battery junction box (BJB) fuses:
    • 1 (60A)
    • 16 (15A)
    • 22 (20A)
  • Central junction box (CJB) fuse 20 (5A)
  • Circuitry
  • Photocell sensor
  • Vehicle security module

Plus hooking up a factory scan tool an checking for DTC'S - diagnostic trouble code's .
Vehicle Security Module Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1695 Autolamp On Circuit Failure Vehicle Security Module Go To Pinpoint Test J . B1792 Autolamp Sensor Input Circuit Short to Battery or Open Vehicle Security Module Go To Pinpoint Test J . B1793 Autolamp Sensor Input Circuit Short to Ground Vehicle Security Module Go To Pinpoint Test J . B2661 Parklamp Relay Output Short to Vbatt Vehicle Security Module Go To Pinpoint Test R . B2662 Parklamp Relay Output Open Circuit Vehicle Security Module Go To Pinpoint Test I . B2663 Headlamp Relay Output Short to Vbatt Vehicle Security Module Go To Pinpoint Test F . B2664 Headlamp Relay Output Open Circuit or Short to Vbatt Vehicle Security Module Go To Pinpoint Test H . Symptom Chart Condition Possible Sources Action
  • No communication with the vehicle security module
  • Circuitry.
  • Vehicle security module.
  • REFER to Section 418-00 .
  • The autolamps are inoperative
  • Circuitry.
  • Headlamp switch.
  • Photocell sensor.
  • Vehicle security module.
  • Go To Pinpoint Test G .

Electric Testing Techniques You Need to Know
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02 sensor heater circuit manifunction bank 1 sensor 1

This is the sensor on driver side closes to the engine sensor has a bad connetion or sensor is bad.
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Where can i get a copy of the parts that make up the air suspesion of my 2001 grand marquis. sometime it works and other time it will not.

Vehicle Dynamic Suspension The vehicle dynamic suspension consists of the following components:
  • Rear air suspension control (RAS) module (5A919)
  • Snorkel
  • Drier
  • Air compressor (5319)
  • Air suspension switch (5K761)
  • Solenoid valve (5311)
  • Air spring (5560)
  • Air suspension height sensor (5359)
  • Air line
------------------------------------------------
Visual Inspection Chart Mechanical Electrical
  • Restricted suspension movement
  • Excessive vehicle load
  • Cut, severed, or crimped air line(s)
  • Damaged air spring(s)
  • Height sensor damage
  • Height sensor mounted incorrectly, disconnected, or damaged
  • Central junction box (CJB):
    • Fuse 5 (15A)
  • Battery junction box (BJB):
    • Fuse 8 (30A)
  • Loose or corroded connectors
  • Air suspension switch OFF


The air suspension control module is diagnosed using Super Star II Tester 418-F045 (007-0041B) or equivalent.
The test connector used to communicate with the air suspension control module is located on the RH side of the luggage compartment.
When the tester is connected, the engine is started and the HOLD/TEST button is latched down, the air suspension control module will respond sending a code 10 to the Super Star II Tester which represents "Diagnostics mode entered." If diagnostic trouble code (DTC) 10 is not displayed, go to Pinpoint Test A.
Air Suspension Control Module Diagnostic Trouble Code (DTC) Index
Condition Possible Sources Action
  • No communication with the air suspension control module
  • CJB Fuse 5 (15A).
  • BJB Fuse 8 (30A).
  • Circuitry.
  • Air suspension control module.
  • GO to Pinpoint Test A .
  • Unable to enter auto test
  • Air suspension control module.
  • Circuitry.
  • GO to Pinpoint Test B .
  • Rear air suspension does not respond to load changes
  • Circuitry.
  • Air compressor.
  • Air compressor inlet tube.
  • Air compressor drier.
  • Air suspension height sensor.
  • Air suspension control module.
  • GO to Pinpoint Test C .
  • Rear rides low/high
  • Circuitry.
  • Air spring solenoid.
  • Air suspension height sensor.
  • Air suspension control module.
  • GO to Pinpoint Test C .
  • Poor ride quality
  • Circuitry.
  • Air springs.
  • GO to Pinpoint Test C .
  • Air suspension warning indicator ON
  • Air suspension switch OFF.
  • Place the air suspension switch in the ON position.
  • Air suspension control module.
  • Circuitry.
  • GO to Auto Test.
  • Instrument cluster (conventional cluster) or lamp warning module (electronic cluster).
  • REFER to Section 413-01A (conventional cluster) or REFER to Section 413-01B (electronic cluster), or REFER to Section 413-01C (natural gas cluster).


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