Flashing check engine light

That code is actually due to the fuel pressure being too low and causing a lean condition that the oxygen sensor picks up. It is common in that vehicle. Check the fuel pump pressure, filters etc.

Once again did you run a scan to see what the codes are?
scan codes for cars Bing video

There are many factors that can cause this condition. Since I have no direct familiarity with the "Citi Rox" engine (I do not believe we actually have that engine available in the U.S.), I will assume it is a GASOLINE (PETROL) engine, not a diesel engine.
If the vehicle has high mileage (over 100,000 miles), check the following:

1. Is the CHECK ENGINE light on or flashing? If so, take the vehicle to a local auto parts store and have them scan for codes. Look up the codes they find on the Internet, and that will help in your diagnosis.
2. Of course, replace the air filter if it is dirty, and make sure there are no obstructions in the air intake.
3. Inspect the throttle body. If it is dirty, clean it with an approved throttle body cleaner for your vehicle, or have it cleaned.
4. Inspect and clean the IAC (Idle Air Controller). Also inspect the EGR valve (Evaporative Gas Recirculation valve) to be sure it isn't leaking or otherwise compromised. The IAC is often the culprit in this condition but sometimes a leak in the EGR valve or its mounting gasket will throw the computer off far enough to where the car will not run correctly.
5. Did the vehicle sit for more than three months recently? If so, either replace all fuel in the tank or, at least, treat the extant fuel with Fuel System Water Remover, then fill the tank with new fuel after driving about 100 miles (150-ish km) with the water remover in the tank. Once you have filled the tank with new fuel, add Fuel System and Injection Cleaner to the tank and drive for another 100 miles (150-ish km). If your performance improves, you'll know you had old or compromised fuel in the tank.

I hope this gives you a starting point!

According to the above results, doubt the fuel pump problem,use BMW ICOM to check.The vehicle road test and read data.May the fuel pump is insufficient, resulting in high pressure fuel pressure is too low, resulting in engine fault light

Dont drive a car with the light flashing. A flashing check engine light means that something is really wrong and you can damage the engine if you drive it.

Keep it under 100 km/h

takes a long time to run the rediness test since there are 6 different tests to complete...

PROCEDURE 1
EVAPORATIVE EMISSION SYSTEM LEAK MONITOR
Inspection Conditions
Engine coolant temperature: 30°C (75°F) or less (The engine is stopped before the test drive is started).
Atmospheric temperature: 5 - 30°C (41 - 113°F).
Condition of A/T: Selector lever D range.
Fuel remained in fuel tank: 30 - 50% is recommended.
Time required: 16 minutes or less after started the engine.
Drive cycle pattern: One trip monitor (from start to ignition switch to "LOCK" (OFF) position. Well be completed while traveling with the following drive cycle pattern.
Test Procedure
Engine: start.
Accelerate until the vehicle speed is 89 km/h (55 mph) or more.
While keeping the accelerator pedal opening degree constant, keep the vehicle speed at 89 km/h (55 mph) or more and travel for 16 minutes.
Return the vehicle to the shop, then turn the ignition switch to "LOCK" (OFF) position.

PROCEDURE 2
FUEL TRIM MONITOR
Drive Cycle Pattern
Inspection Conditions
Engine coolant temperature: 100°C (212°F) or less.
Atmospheric temperature: -10 - 60°C (14 - 140°F).
Condition of A/T: Selector lever D range.
Time required: 30 minutes or more.
Drive cycle pattern: One trip monitor (from start to ignition switch to "LOCK" (OFF) position). Will be completed while traveling with the following drive cycle pattern.
Test Procedure
Engine: start.
Accelerate until the vehicle speed is 89 km/h (55 mph) or more.
While keeping the accelerator pedal opening degree constant, keep the vehicle speed at 89 km/h (55 mph) or more and travel for 30 minutes.
Return the vehicle to the shop, then turn the ignition switch to "LOCK" (OFF) position

PROCEDURE 3
CATALYTIC CONVERTER MONITOR
Drive Cycle Pattern
Inspection Conditions
Atmospheric temperature: -10°C (14°F) or more.
Condition of A/T: Selector lever D range.
Engine coolant temperature: Not set.
Time required: 16 minutes or more.
Drive cycle pattern: One trip monitor (from start to ignition switch to "LOCK" (OFF) position). Will be completed while traveling with the following drive cycle pattern.
Test Procedure
Engine: start.
Accelerate until the vehicle speed is 89 km/h (55 mph) or more.
Travel for 300 seconds or more while keeping the vehicle speed at 89 km/h (55 mph) or more.
Decelerate until the vehicle speed is within 80 km/h (50 mph) or less.
While traveling at 56 - 80 km/h (35 - 50 mph) for 10 minutes or more, fully close the throttle at least once in 2 minutes and decelerate for 10 seconds or more.
Do not repeat deceleration too often.
Vehicle speed may go below 56 km/h (35 mph) after the deceleration.
Stopping and braking are permitted. (If stopped or drive at 56 km/h (35 mph) or less for more than 5 minutes the monitoring may be stopped. In this case please restart monitoring from the beginning.)
After completing the above deceleration, bring the vehicle speed back to 56 - 80 km/h (35 - 50 mph) and keep it in the range until starting the deceleration again.
Repeat the above deceleration at least 5 times.
Return the vehicle to the shop, then turn the ignition switch to "LOCK" (OFF) position

PROCEDURE 4
HEATED OXYGEN SENSOR MONITOR
Drive Cycle Pattern
Inspection Conditions
Engine coolant temperature: 100°C (212°F) or more.
Atmospheric temperature: -10°C - 60°C (14 - 140°F) or more.
Condition of A/T: Selector lever D range.
Time required: 16 minutes or more.
Drive cycle pattern: One trip monitor (from start to ignition switch to "LOCK" (OFF) position). Will be completed while traveling with the following drive cycle pattern.
Test Procedure
Engine: start.
Accelerate until the vehicle speed is 56 - 80 km/h (35 - 50 mph).
While keeping the accelerator pedal opening degree constant, keep the vehicle speed at 56 - 80 km/h (35 - 50 mph) and travel for 16 minutes or more.
Stopping and braking during this operation are permitted. Keep the accelerator opening degree constant for 1 minute or more after each acceleration.
Return the vehicle to the shop, then turn the ignition switch to "LOCK" (OFF) position

PROCEDURE 5
EXHAUST GAS RECIRCULATION (EGR) SYSTEM MONITOR
Drive Cycle Pattern
Inspection Conditions
Engine coolant temperature: 100°C (212°F) or less.
Atmospheric temperature: 5 - 60°C (41 - 140°F).
A/C switch: OFF.
Condition of A/T: Selector lever D range.
Time required: 16 minutes or more.
Drive cycle pattern: One trip monitor (from start to ignition switch to "LOCK" (OFF) position). Will be completed while traveling with the following drive cycle pattern.
Test Procedure
Engine: start.
Accelerate until the vehicle speed is 56 - 80 km/h (35 - 50 mph).
While traveling 16 minutes or more at 56 - 80 km/h (35 - 50 mph) with engine speed 2,000 r/min or above, fully close the throttle at decelerate for 5 seconds or more until the engine speed reaches 1,000 r/min or under.
Do not repeat deceleration too often.
Stopping and braking are permitted (Rapid deceleration and sharp steering are not permitted).
After completing the deceleration, bring the vehicle speed back to 56 - 80 km/h (35 - 50 mph) and keep it in the range until starting the deceleration again.
Repeat the above deceleration at least 8 times by fully closing the throttle valve.
Return the vehicle to the shop, then turn the ignition switch to "LOCK" (OFF) position

PROCEDURE 6
OTHER MONITOR (Main Components, Sensors & Switches, Wire Breakage & Short Circuit)
Drive Cycle Pattern
Inspection Conditions
Engine coolant temperature:
100°C (212°F) or less (Except engine coolant temperature sensor monitoring).
30°C (86°F) or less (Engine coolant temperature sensor monitoring).
Atmospheric temperature:
5°C (41°F) or more (Except engine coolant temperature sensor monitoring).
-10°C (14°F) or less (Engine coolant temperature sensor monitoring).
Condition of A/T: Selector lever D range.
Time required: 21 minutes or more.
Drive cycle pattern: One trip monitor (from start to ignition switch to "LOCK" (OFF) position). Will be completed while traveling with the following drive cycle pattern.
Test Procedure
Engine: start
Accelerate until the vehicle speed is 56 km/h (35 mph) or more.
While keeping the accelerator pedal opening degree constant, keep the vehicle speed at 56 km/h (35 mph) or more and travel for 16 minutes or more.
Return the vehicle to the shop.
After stopping the vehicle, continue idling for 5 minutes, and then turn the ignition switch to the "LOCK" (OFF) position. Moreover, the vehicle should be set to the following conditions for idling.
A/C switch: OFF
Lights and all accessories: OFF
Transmission: Neutral

What really happens is your service check indicator light switches itself on due to completion of 10,000 or 5,000 Km (depending on the manufacturer's specs) from your previous oil change or service. The internal clock keeps track of your mileage travelled and let you know when the 10,000 or 5,000 km is up. All that is required is to RESET the service indicator light. On some cars, the resetting of the service light can be done by the car owner which normally involves pressing a button at the front Instrument Panel and so on and so forth. If you have the user manual for your car, I suggest you read it to see if there is anything on resetting the service light.
The bad news is not all vehicle manufacturers have a reset button at the front dashboard, and some requires the use of a Diagnostic Scanner to do this. Ask your mechanic if you are not sure.
The speed is cut down to 60 is due to the fact that if you continue to drive your car after the prescribed mileage without changing the engine oil, there will be 'accelerated' wear and tear to your engine and perhaps even an early engine overhaul. Driving with a long overdue engine oil change is bad but driving it at speed would be worst. I believe you get the drift.
As for your mot test, it is mandatory that no warning light whatsoever should appear at the instrument panel but yours showed up.

power light flashing means trans sowas he able to retrieve any codes?check harness connections for trans in engine compartment,also wiggle engine harness in area between tran and engine bad groundf loose connection sounds like cause

the crank shaft sensor is bad, it is heating up, and that is why it works after the water being poured on it, it is cooling it off.....