Trouble P0650 - Malfunction Indicator Lamp - Circuit Malfunction

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DIAGNOSE YOUR CAR YOURSELF!
When the ignition is turned on, the malfunction indicator lamp lights up continuously. When the engine starts cold, the warning lamp turns off and blinks once. If there is any malfunction in the system, the warning lamp lights up.

Conditions for the DTC to Occur

The ignition switch is in the on position.

Conditions for setting the DTC.

The ECM detects a persistent short to ground or an open in the signal circuit.

Action Taken When the DTC Sets

The malfunction indicator lamp lights up. The controller records the operating conditions at the time the fault is detected. This information is stored in a status record buffer and fault logs. An archive of diagnostic trouble codes is saved.

Conditions for Clearing DTC/Malfunction Indication

The malfunction indicator lamp turns off after three consecutive test cycles have completed without failure. The historical DTC clears after 40 heat cycles without failure. The DTC can be cleared by a scan tool.

Diagnostic guidelines

An intermittent fault may be caused by a loose connection, chafed insulation, or broken wiring under the insulation. Any circuit suspected of causing an intermittent fault should be carefully tested for the following conditions. Removed terminals Terminal connections Faulty locks Deformed Damaged terminals Loose connection between terminals and wires Physical damage to wiring harnesses

Good day! The check light is on, error 0650 VAZ 2114 Error 0650, lamp circuit malfunction, has anyone had this? what did you do? Error 0650.

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One comment on “Error 0650. Check light Error 0650 VAZ 2114 Error 0650 lamp circuit malfunction”

I got a check because of a light bulb. Try changing the light bulb

I figured out the errors, maybe it will be useful for someone (the symptoms were the following - waste of fuel, about 23 l/100 km in winter, 2.0 L engine). After diagnosing elm, the following came out:

P0650: Malfunction Indicator Lamp (ML) Control Circuit

P0038: HO2S Heater Control Circuit High (Bank 1 Sensor 2)

(the second lambda as it turned out)

I’ll tell you right away the decoding of all this, and more specifically, what to change and adjust I searched for a long time and with little success, and the benzene oil went on as usual. finally found this: “The heated oxygen sensor (HO2S) operating range is 350 to 850°C (662 to 1562°F). By using a HO2S sensor heater, the time required to activate the fuel control is significantly reduced. The current through the heater is controlled by the PCM via a pulse width modulation control circuit. The cold HO2S sensor circuit has low resistance and carries high current. On the other hand, as the temperature of the sensor resistor increases, the current gradually decreases.”

What does this mean? as explained by friends comrades + their thoughts = 1. P0038: HO2S Heater Control Circuit High (Bank 1 Sensor 2) P0038 HO2S heater control circuit high short circuit to positive electrical heating circuit

— bank 1 sensor 2 is the 2nd lambda (clean, wash, didn’t, bought a new one) spare part code
39210 23750.
2.
P0650: Malfunction Indicator Lamp (ML) Control Circuit P0650 Malfunction in the malfunction indicator lamp (MIL) circuit;
the malfunction was due to a malfunction lambdas, voltage was supplied to the lambda, the voltage was silent, the voltage became stronger (by the way, there is such a feature that wires can come off and short-circuit to the body, so check the wiring before replacing the lambda). Well, that’s all, I’m moving on to testing it in practice))) photo of the new lambda 2, located after the catalyst, otherwise some services can make a complex replacement, the replacement is simple and inexpensive; you don’t need to unscrew anything too much. Good luck to everyone!

Causes of error P0650

The most common causes of the P0650 code are:

• Short circuit or break in electrical wires related to the CAN bus, or damage to the corresponding connectors
• Control module ground wire loose or damaged
• Malfunction of the malfunction indicator light bulb or LED
• Malfunction indicator lamp control circuit malfunction
• CAN bus fault
• In rare cases, a faulty powertrain control module (PCM)

Symptoms of malfunction

The main driver symptom of P0650 is the MIL (Malfunction Indicator Light). It is also called Check engine or simply “check light”.

They can also appear as:

The severity of this code can range from minor to severe. The malfunction indicator light alerts the driver that there is a possible problem with the vehicle. If this indicator does not work properly, the driver will not be able to recognize the presence of malfunctions that require prompt resolution.

What are the symptoms of a P0650 code?

The main symptoms of this error are:

• Storing P0650 Code in Computer Memory
• The Check Engine light illuminates, indicating a malfunction, on the vehicle's dashboard
• The Check Engine light comes on in the absence of any faults
• The Check Engine light does not light up when there is a malfunction
• Absence of any symptoms other than the P0650 error code being stored in the computer's memory

How to fix the problem

After diagnosis, the problem should be repaired. When reading a signal, it is necessary to check the circuit and devices following it. The most accurate method is to replace the damaged part with a known good one (new). This will eliminate the possibility of incorrect repairs. If the device is in working condition, the lines are checked; usually a primitive test is sufficient. However, if the control unit or relay fails, you will need a special tester and the ability to use it.

Separately, it is necessary to take into account that factory terminals and blocks become loose and oxidize over time. If the contact on the hitch deteriorates, the on-board computer or laptop program will say that the part is damaged, even if it is not.

You can prevent this from happening in the following way.

Important!

You can diagnose VAZ 2114 error codes on the instrument panel and ECU yourself, only if you understand the essence of the process. If you don’t have confidence in your own abilities, it is recommended to contact a qualified technician.

If you have the appropriate knowledge and the necessary equipment, you can find and correctly decipher the error codes of the VAZ 2115 injector and other elements yourself. Due to the simplicity of the car's electrical circuit, the user does not require deep knowledge of mechanics or electronics.

How does a mechanic diagnose a P0650 code?

When diagnosing this error, the mechanic will do the following:

• Check for P0650 with an Advanced OBD-II Scanner
• Start the vehicle and check to see if the malfunction indicator light comes on for a few seconds and goes off shortly thereafter
• Determines whether the malfunction indicator light has burned out
• Checks whether the malfunction indicator lamp is properly connected
• Visually inspect electrical wires and connectors for shorts, looseness, and damage.
• If necessary, repair or replace all shorted, broken, damaged or corroded components.
• Determines whether the malfunction indicator lamp fuse has blown
• If no problem is found, check the powertrain control module (PCM).

Diagnosis and problem solving

First of all, you need to check whether the light comes on at the right time. It should light up for a few seconds when the ignition is turned on. If the light turns on for a few seconds and then goes out, then everything is fine. The working light is also indicated by the fact that it remains on.

If the malfunction indicator lamp does not light up at all, you need to determine the cause of the problem.

Check if it is burnt out, replace if necessary. Also inspect whether the lamp is installed correctly and whether there is a good electrical connection. Visually inspect all wiring and connectors leading from the MIL to the PCM.

Inspect the wires for frayed insulation. Disconnect all connectors as necessary to check for bent pins, corrosion, and broken terminals. If problems are found, clean or repair as necessary.

Check that other parts of the instrument cluster and other warning lights are working properly. Please note that you may need to remove the unit during diagnostic steps.

If your vehicle is equipped with a PCM or MIL fuse, check it and replace it if necessary. Use a digital voltmeter to check the corresponding wires in the circuit at the lamp end and the PCM end. Check for short to ground or open circuit.

If everything is within manufacturer's specifications but P0650 remains, replace the PCM; it may be an internal fault. Replacing the PCM is a last resort and requires the use of specialized hardware to program it.

What repairs can fix the P0650 code?

To resolve the P0650 code, you may need to:

• Replacing the malfunction indicator light bulb or LED
• Proper connection of the malfunction indicator light
• Repair or replacement of electrical wires or connectors
• Replacing fuses
• Properly connecting or replacing the control module ground wire
• In rare cases, replacing the powertrain control module (PCM)
• Clearing present trouble codes from the computer's memory and test driving the vehicle to see if the P0650 code appears again and determine if the problem is resolved

On which cars is this problem most common?

The problem with code P0650 can occur on different machines, but there are always statistics on which brands this error occurs more often. Here is a list of some of them:

• Chery
• Chevrolet (Chevrolet Aveo, Cruz, Lacetti, Silverado)
• Chrysler
• Daewoo (Daewoo Matiz, Nexia)
• Ford (Ford Transit)
• GMC Sierra
• Hyundai (Hyundai Grand Starex, Santa Fe, Solaris, Sonata, Starex, Tucson)
• Isuzu
• Iveco
• Kia (Kia Rio, Sid, Sorento, Sportage)
• Nissan
• Opel (Opel Astra, Vectra, Zafira, Corsa)
• Pontiac (Pontiac Grand Prix)
• Renault (Renault Duster)
• Rover
• Saab 9-3
• Volvo
• VAZ 2114, 2115
• Volga Chrysler
• Gazelle Business, Sable, ZMZ 405
• Lada Priora
• UAZ Bukhanka, Iveco, Patriot

You can sometimes encounter other errors with fault code P0650. The most common are the following: P0172, P0340, P1258, P1516, P1518.

Additional comments for troubleshooting P0650

It should be noted that in some vehicles the Check Engine light may not come on immediately, but only after detecting the error multiple times. For more detailed information, please refer to the vehicle's owner's manual.

Diagnosing and repairing the P0650 code can take a lot of time and effort, so if you encounter this code, it is recommended that you seek help from a qualified technician who has the necessary diagnostic equipment.

Need help with error code P0650?

The company - CarChek, offers a service - on-site computer diagnostics; specialists from our company will come to your home or office to diagnose and identify problems with your car. Find out the cost and sign up for on-site computer diagnostics or contact a consultant by phone

Error codes

Each error has its own identification number. For the convenience of users, errors are sorted into the following groups:

Group 01

01 series codes occur due to problems with the main sensors. For example:

The most common error in this group is p0106. It indicates problems with the pressure sensor inside the intake manifold. Its main reasons are:

After eliminating the code, you must reset and restart the engine with diagnostics. If necessary, carry out thorough cleaning.

Group 03

Errors occur when there is a problem in the ignition system. Common ones are:

Malfunction indicator lamp, circuit low voltage

• The ignition switch is in the on position.

• The ECM detects a persistent short to ground or an open in the signal circuit.

• The malfunction indicator lamp lights up.
• The controller records the operating conditions at the time the fault is detected. This information is stored in a status record buffer and fault logs.
• An archive of diagnostic trouble codes is saved.

• The malfunction indicator lamp turns off after three consecutive test cycles have completed without failure.
• The historical DTC clears after 40 heat cycles without failure.
• The DTC can be cleared by a scan tool.

VAZ (LADA) errors via OBDI protocol. Self-diagnosis.

1 — Malfunction of the engine control unit.

2 — The voltage in the on-board network is too high.

3 — Malfunction in the electrical circuit of the fuel level sensor.

4 — Malfunction in the electrical circuit of the antifreeze controller.

5 — Error in external temperature controller.

6 — Overheating of the engine (power unit)

7 — Emergency oil pressure in the engine.

8 — The voltage in the vehicle's electrical network is too low.

9 — Low battery level (battery is discharged)

12 — Malfunction in the electrical circuit of the malfunction indicator located on the instrument panel.

13 — No data (loss of communication) from the oxygen sensor (lambda probe)

14 — High signal level of the coolant temperature sensor (antifreeze).

15 — Malfunction in the electrical circuit of the coolant temperature controller.

16 — Increased voltage in the vehicle’s electrical network

17 — Low voltage in the on-board network

19 — Malfunction in the electrical circuit of the crankshaft position sensor.

21 — Malfunction in the throttle position regulator.

22 — Low signal level of the throttle position sensor

23 — High signal level of the intake air temperature sensor

24 — Malfunction in the electrical circuit of the vehicle speed sensor.

25 — Low signal level of the intake air temperature sensor

27 — Incorrect signal from the exhaust gas system sensor

28 — Incorrect signal from the exhaust gas system sensor

33 — Malfunction in the electrical circuit of the air flow meter

34 — Malfunction in the electrical circuit of the air flow meter

35 — The ECU has detected a deviation in idle speed

41 — Incorrect signal coming from the phase regulator

42 — Malfunction in the electrical circuit of the electronic ignition system

43 — Incorrect signal coming from the knock sensor

44 — The mixture in the engine cylinders is too lean or rich

45 — The mixture in the engine cylinders is too lean or rich

49 — Vacuum leak

51 — Malfunction of one of the memory modules of the control unit - RAM or PROM

52 — Malfunction of one of the memory modules of the control unit - RAM or PROM

53 — Incorrect signal coming from the exhaust gas sensor

54 — No signal from the octane corrector regulator

55 — Poor air-fuel mixture at low load on the car engine

61 — Malfunction in the electrical circuit of the oxygen sensor (lambda probe)

E - Determining an error in a data packet stored in EEPROM

Determining and decoding errors on the VAZ 2114

Self-diagnosis of a car allows you to identify faults, but some of them are rarely identified. An odometer is used for diagnostics.

see also

Self-diagnosis of VAZ 2114

The sequence of actions is as follows:

1. Press and hold the odometer button and turn the ignition key to the first position.
2. Release the odometer button and press briefly again. As a result, the firmware version will be displayed.
3. Now, to see the error codes, you need to press and release the odometer button again.

Error codes are in the form of numbers from 1 to 9 and two-digit numbers, unlike those displayed by the on-board computer. Thus, you can use the odometer to identify some car faults. The most common errors are shown in the table below.

VAZ 2114 error code table

Diagnosis of faults using special equipment

To identify faults, service stations usually use the car’s on-board computer and a laptop with specialized applications. In this case, it is possible to obtain error codes that correspond to various problems. The most common of them are shown in the table.

If errors occur with other codes, you should read the information about them in the file that comes with the car diagnostic application, or search on the Internet.

The controller clears the memory after turning off the engine with the ignition and disconnecting power from the battery for 10-15 seconds. In this way, you can determine after repair whether the malfunction has been eliminated.

Errors in the VAZ 2114 occur quite often, so the ability to recognize them will not be superfluous to carry out proper car repairs. For correct diagnosis, you will need a computer with a special program and an understanding of the on-board computer readings.

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