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P0651 my programmer says that its sens reference voltage B circ/open

Anyone know what this means?

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CODE P1122 ELECTRONIC THROTTLE CONTROL ACTUATOR. CODE PO102 - MASS AIR FLOW SENSOR VOLUME AIR FLOW VAF SENSOR LOW INPUT. CODE P1031 - HEATED OXYGEN SENSOR HO2S 1 HEATER CIRCUIT MALFUNCTION. CODE P1051 -

Posted on May 20, 2011

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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

Jun 10, 2017 | Cars & Trucks

1 Answer

1998 cadilac deville passenger side climate control not working, what should the voltage be?


Turn the ignition switch to the ON position.
Turn the passenger climate control to full hot.
Measure the voltage at terminal D13 of the heater and A/C programmer.
Is the voltage measured equal to the specified value?
12 V
YES - Go to Step 2
NO - Go to Step 8
Turn the passenger temperature control to full cold.
Measure the voltage at terminal D13 of the heater and A/C programmer. Refer to Measuring Voltage in Wiring Systems.
Is the voltage equal to the specified value?
0 V
YES - Go to Step 3
NO - Go to Step 8
3
Press and hold down the passenger temperature control.
Measure the voltage at terminal C16 of the heater and A/C programmer. Refer to Measuring Voltage in Wiring Systems.
Is the voltage equal to the specified value?
0 V
YES - Go to Step 4
NO - Go to Step 9
4
Release the passenger temperature control.
Measure the voltage at terminal C16 of the heater and A/C programmer. Refer to Measuring Voltage in Wiring Systems.
Is the voltage equal to the specified value?
12 V
YES - Go to Step 5
NO - Go to Step 9
5
Turn off the passenger temperature control.
Measure the voltage at terminal D10 of the heater and A/C programmer. Refer to Measuring Voltage in Wiring Systems.
Is the voltage equal to the specified value?
12 V
YES - Go to Step 6
NO - Go to Step 10
6
Turn on the passenger temperature control.
Measure the voltage at terminal D10 of the heater and A/C programmer. Refer to Measuring Voltage in Wiring Systems.
Is the voltage measured less to the specified value?
12 V
YES - Go to Step 7
NO - Go to Step 10
7
Inspect the terminal contact at the heater and A/C programmer.
If the contact is OK, replace the heater and A/C programmer. Refer to Programmer Replacement .
Did you complete the repair?
--
System OK
--
8
Test CKT 831 (DK BLU/WHT) for an open or a short.
If the circuit is OK, replace the passenger temperature control. Refer to Control Assembly Replacement - Passenger .
Did you complete the repair?
--
System OK
--
9
Test CKT 1336 (DK BLU) for an open or a short.
If the circuit is OK, replace the passenger temperature control. Refer to Control Assembly Replacement - Passenger .
Did you complete the repair?
--
System OK
--
10
Inspect CKT 1370 (PPL) for an open or a short.
If the circuit is OK, replace the passenger temperature control. Refer to Control Assembly Replacement - Passenger .
Did you complete the repair?

May 20, 2017 | Cars & Trucks

1 Answer

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

Dec 12, 2015 | 2008 Chevrolet Chevrolet TrailBlazer LT

2 Answers

My 2003 chevy pickup starts up then stops running almost instantly and will not run it has a 4'3 engine and has a dtc p0651 code in it could you tell me how to fix the problem?


You have a short on PCM - powertrain control module , 5volt reference circuit . This will surely make the vehicle not keep running !
The powertrain control module (PCM) provides 5 volts to the following sensors:
?€¢
The air conditioning (A/C) pressure sensor


?€¢
The fuel tank pressure (FTP) sensor, if equipped

These 5-volt reference circuits are independent of each other outside the PCM, but are bussed together inside the PCM. Therefore a circuit condition on one sensor 5-volt reference circuit may affect the other sensor 5-volt reference circuits. The PCM monitors the voltage on the 5-volt reference circuit. If the PCM detects that the voltage is out of tolerance, DTC P0651 sets.

Aug 30, 2015 | Cars & Trucks

1 Answer

Hyndai h1 codes p0335 p1131 p0180 p1123 p1120 p0121 p1127 p0110


Wow do You have a bunch of different Sensor and Circuit Problems

0110 Intake Air Temp Circ Malfunction
0121 Throttle Position sensor A Range Problem
0180 Fuel Temperature Sensor A Circuit Malfunction
0335 Crankshaft Pos Sens A Circ Malfunc
1120 Throttl Pos Sensor Circuit
1123 Throt Pos sens Higher then Expected
1127 Exhaust Not Warm Downstream 02 Temp Sensor
1131 Lack of Sig H02S Sens Indicates Running too Lean
Learn more about codes here http://www.troublecodes.net/OBD2/Pcodes/

I would guess with all this You may Have a Connection Problem or a Computer Issue Get the codes reset and monitor as soon as check engine light comes on to see what codes com up first and what codes are pending
Good Luck Rickie

May 13, 2014 | 2010 Hyundai H-1 Travel

1 Answer

SERVICE ENGINE LIGHT P0462


the 05-07 nissan quest has a problem with code p0462 fuel level sen/circ (low voltage) . In past 6 months if serviced 10 van with this issue, and found according to service manual that the tank sender unit is at fault. This has not fixed the issue, and the cluster self test/data montitor values show to be in specs. swapped cluster out of known good van has fixed this issue everytime . the cluster is nearly 400 bucks . You can have yours repaired !! ck online .

Dec 10, 2012 | 2007 Nissan Quest 3.5 Minivan

1 Answer

Chevy colorado


Hi there:

DTC P0641 - 5-Volt Reference 1 Circuit

DTC P0651 - 5-Volt Reference 2 Circuit

Diagnostic Fault Information
Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

Circuit/System Description
The engine control module (ECM) has 2 internal 5-volt reference busses called 5-volt reference 1 and 5-volt reference 2. Each reference bus provides 5-volt reference circuits for more than one sensor. Therefore, a fault condition on one 5-volt reference circuit will affect the other 5-volt reference circuits connected to that reference bus. The ECM monitors the voltage on the 5-volt reference busses.

The 5-volt reference 1 bus provides 5 volts to the following sensors:
* The manifold absolute pressure (MAP) sensor
* The fuel tank pressure (FTP) sensor
* The air conditioning (A/C) refrigerant pressure sensor
* The accelerator pedal position (APP) sensor 2
* The intake camshaft position (CMP) sensor

The 5-volt reference 2 bus provides 5 volts to the following sensors:
* The APP sensor 1
* The throttle position (TP) sensor 1 and 2
* The crankshaft position (CKP) sensor

Conditions for Running the DTC
* DTCs P0601, P0602, P0603, P0604, P0605, P0606, P0607, and P2610 are not set.
* The ignition is in Unlock, Accessory, Run, or Crank.
* The ignition voltage is more than 5.23 volts.
* DTCs P0641 and P0651 run continuously when the above conditions are met.

Conditions for Setting the DTC
The ECM detects a voltage out of tolerance condition on the 5-volt reference 1 or 2 bus for more than 0.5 second.

Action Taken When the DTC Sets
DTCs P0641 and P0651 are Type A DTCs.

Conditions for Clearing the MIL/DTC
DTCs P0641 and P0651 are Type A DTCs.

Diagnostic Aids
It may be possible to locate the fault by disconnecting one component at a time from the 5-volt reference circuit while viewing the 5-Volt Reference circuit parameter on the scan tool. The scan tool parameter would change from Fault to OK when the source of the fault is disconnected.

If all 5-volt reference components have been disconnected and a Fault is still indicated, the fault may exist in the wiring harness.

Circuit/System Verification
With the ignition ON and the engine OFF, observe the 5-volt Reference 1 and 2 parameters. The scan tool should display 4.3-4.7 volts for a normally operating system.

Circuit/System Testing
Important: Additional DTCs will set when disconnecting the components.

1. Ignition OFF, disconnect the harness connector of all appropriate sensors for the applicable DTC.

Important: A short to voltage on the signal circuit of certain components may cause this DTC to set.

2. Ignition ON, measure for 4.8-5.2 volts between one of the 5-volt reference circuits and ground.

* If the voltage is less than the specified value, test for a short to ground on all the 5-volt reference circuits. If all circuits test normal, replace the control module.
* If the voltage is greater than the specified value, test for a short to voltage on all the 5-volt reference circuits, or the signal circuit, for each component associated with the appropriate 5-volt reference circuit. If all circuits test normal, replace the control module.

3. Connect each component associated with the 5-volt reference circuit, one at a time, while monitoring the voltage. The voltage should not change more than 1 volt.

* If the voltage display changes more than the specified value when a component is connected, replace the component.


Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Jul 12, 2012 | Chevrolet Colorado Cars & Trucks

1 Answer

Hi there i'm in world of trouble i've been working on my Nissan Armada 05 and i have got 4 error codes they are P1122 ETC FUNCTION CIRC, P0102 MAF SEN/CIRCUIT, P1031 A/F SEN1 HTR (B1), P1051 A/F...


CODE P1122 ELECTRONIC THROTTLE CONTROL ACTUATOR. CODE PO102 - MASS AIR FLOW SENSOR VOLUME AIR FLOW VAF SENSOR LOW INPUT. CODE P1031 - HEATED OXYGEN SENSOR HO2S 1 HEATER CIRCUIT MALFUNCTION. CODE P1051 -

May 20, 2011 | 2006 Nissan Armada

2 Answers

Can you tell me what codes 54 and 21 are on a 1995 caravan 3.0 please?


Hello..
Code 21: Is an oxygen sensor Code 54: Is a crank positioning sensor.
Hope this helps!

Dec 06, 2009 | 1995 Dodge Caravan

1 Answer

2000 Monte Carlo SS- Stalls after running 5-15 minutes


Check the plug on the MAF.Wiggle it while its running......see if it stalls or jerks.
Or.......replace the MAF if the plug/wire connections are good to it.
The other 2 codes will not stall the engine.

Remember.....all cars run on used parts.
A good used MAF can be had a lot cheaper than new.

Aug 26, 2009 | 1999 Chevrolet Monte Carlo

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