Trouble P0650 Malfunction Indicator Light (MIL) Control

Good evening, error P0650 (MIL circuit malfunction) has appeared, although the CheckEngine light lights up properly when the ignition is turned on, then goes out. There are no complaints about her. What could the brain not like? How does the brain generally determine the health of circuits? Does it measure current?

loaf, ZMZ-409, Euro-3, Mikas-11.

I turn on the ignition, reset the errors, after 3 seconds this error appears in the 'current errors', after 20 seconds in the 'confirmed' ones.

I noticed that if you disconnect + 12V from lambda No. 1, then when reading errors there is complete confusion - It will show the absence of errors, then a complete bouquet, then again empty. I'm shocked, I don't know where to dig anymore.

loaf, ZMZ-409, Euro-3, Mikas-11.

Try checking the ground! maybe there is a bad connection somewhere

Gentlemen, tell the kettle, it looks like the controller controls the 'CheckEngine' light bulb through some kind of relay. I found 3 relays in my loaf (one under the passenger seat) and two under the driver's seat, but not a single circuit from these relays with the 'CheckEngine' light is connected. There may be more relays somewhere, maybe I didn’t find them? Email I don’t have a diagram, so I’m struggling.

UAZ-390995, ZMZ-409.1, Euro-3, Mikas-11.

UAZ-390995, ZMZ-409.1, Euro-3, Mikas-11. The ECU controls the light bulb directly, there are no relays. ECU contact number for Mikas-11 58. https://2a2.ru/patriot/b_m11.html

Comrades, with the engine running, what can be done so that the controller lights up “CheckEngine”, without damaging the engine, of course. The emergency oil pressure sensor is connected directly to the MIL light.

To make the kettle light up, install the LPG without lambda probe emulators, deregulate the gas supply at idle - open it more, or turn the sensitivity on the gearbox, and give the gas more than 3 thousand revolutions a couple of times, the probability of the light coming on is 90%. :)))))))))))

Causes of error P0650

The most common causes of the P0650 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)

What are the symptoms of a P0650 code?

The main symptoms of this error are:

Storing P0650 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 in the computer's memory

Diagnostics

There are two ways to set error codes for VAZ 2114 injector 8 valves. However, each method has unique advantages and disadvantages.

The self-diagnosis method does not require the driver to have complex instruments or additional units. To complete the procedure, the car itself is enough.

The standard sequence of actions looks like this.

If the sequence of actions is performed correctly, all indicators will light up and the display will show a two-digit fault code.

The most common error codes for the VAZ 2114 panel, occurring in 90% of cases:

In some cases, errors may be superimposed on each other if the failure is similar. For example, if errors 1 and 4 intersect, the panel will indicate "5".

It is important to know that after viewing, VAZ 2114/2115 error codes do not disappear on their own after repairs are performed. They need to be forced reset. To complete the work you will need a simple sequence of actions:

This also needs to be done if you are planning a trip to a service station. Having discovered the instructions from the on-board computer, the technicians will correct these problems, which will definitely be more expensive.

The disadvantages of an independent procedure include the low accuracy of the data. On-board diagnostics only show the general direction vector where the fault should be looked for.

You can identify error codes for VAZ 2115 and 2114 using a laptop with a special program. The tool is connected to the vehicle's test socket through a set of adapters. The wizard configures the software, and after diagnostics, one or more faults will be displayed on the computer screen in the form of a five-digit code.

The first part is the letter:

The second part is a single digit:

The next element is the breakdown group indicator:

The final two numbers point directly to the problem itself.

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).

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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.

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!

Common mistakes when diagnosing code P0650

The most common mistake when diagnosing a P0650 is failure to follow the diagnostic protocol established by the vehicle manufacturer. The mechanic must always follow protocol to perform all inspections and repairs properly. Also, in order to avoid making an incorrect “diagnosis” and performing unnecessary repair work, it is recommended that all present errors be considered and eliminated in the order in which they are stored in the computer’s memory.

What repairs can fix the P0650 code?

To resolve the P0650 , 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 again and determine if the problem is resolved

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

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 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.

719

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.