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Category: Fault code p1678

We do not travel outside of this set area. Customers outside this area must arrange recovery to Westerham, Kent if they would like us to fix their vehicle. No other vehicle in the Vauxhall range is affected. The car will not start. You will also notice a flashing light on the dash — a car with a spanner through the centre see picture below. ECM — The Engine Control Module is responsible for monitoring and controlling all major aspects of your engine — fuel, air, ignition etc…. IPC — The Instrument Cluster contains your speedometer, rev counter and dash warning lights the part behind your steering wheel.

Genuine Tech 2 Vauxhall diagnostics are needed to fix this issue. We have genuine Tech 2 diagnostics and can fix this problem for you in no time at all. We have fixed this common problem many times already.

fault code p1678

No hidden costs. Please feel free to give us a ring! Hi Ali. If you are in our area then we will happily fix your issue — just give us a call to book an appointment.

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Many thanks, Autolox. Hi I have this problem too with my Vauxhall Corsa 1. I have had new battery fitted. Same problem, I did try start the car on flat battery and the flashing spanner light comes up, would this be the BCM? Many thanks. You are correct in thinking the BCM is responsible for those other features — although they are not affected by the issue described.

fault code p1678

My 1. When I turn the key all the way the red battery light disappears, when I release key it comes back?? You need to trace the missing 12v feed from the starter back to see where the issue lies. It could potentially be an ECU problem but you must first confirm this with the aid of a wiring diagram. When I turn the key all the way the red battery light disappears, when I release key it comes back. The codes were P P P Do you reckon I need to reprogram key and wht about the ECU and bcm thanks. It seems like you have the issue described above.

If you are in our catchment area then please contact us or alternatively get the vehicle recovered to the main dealers. HiMy corsa reg battery was flat for more than a month and I changed with new battery! After changing with new battery red battery sign and a car with a spanner through the centre are showing on screen! And it is not Turning the ignition but radio or other light are working fine!Be sure to double check the codes. Anything P to P or P to P will be Manufacturer specific and may not match the ones listed here.

Check specific manufacturer pages on the site, as some of them, we list the OBD2 codes on those pages for those specific vehicles. Skip to content. P Theft Deterrent System Password Incorrect Engine cranking, then the PCM received a frequency code that did not match the code it received from the theft deterrent module.

Engine running, then the PCM detected an incorrect voltage level on one or more injector driver circuits, condition met for 5 seconds. Engine speed over rpm, then the PCM did not detect any CKP sensor pulses, condition met for over 50 milliseconds. Engine cranking or running, then the PCM received a number of Dl high-resolution pulses without any Dl low-resolution pulses.

Key on or engine running, then the PCM detected the fan control circuit failed the output voltage check fan on for 5 seconds. Engine cranking, then with the engine running, the PCM detected that it did not receive a Starter signal at terminal C1 Engine cranking, then the PCM determined that it did not receive the correct frequency code from the Theft Deterrent Module.

Engine cranking, then the PCM received a frequency code that did not match the code it received from the theft deterrent module. Engine running, then the PCM detected that the closed throttle angle correction requirement was 6.

Engine running with Cruise Control enabled and engaged, then the PCM detected an extremely rapid rate of vehicle acceleration. Engine running with the Cruise Control enabled and engaged, then the PCM detected that the engine speed was more than rpm. Engine running, then the PCM detected that the Engine Coolant Switch signal was low indicating an open circuit for 20 seconds. Engine runtime over 10 seconds, then the PCM detected an ODM 2 fault line over voltage condition, condition met for 2 seconds.

Key on, and then the PCM detected an open, short-to-ground or short-to-voltage condition in the Coolant Gauge Circuit. Key on, and then the PCM detected an open, short-to-ground or short-to-voltage condition in the Tachometer Circuit.

Key on, then the PCM detected a short to ground, open circuit or a short to power in the Mil Request circuit for 2. Key on or engine running, then the PCM detected that a request for engine torque reduction had failed.

Key on or engine running, then the PCM received a signal from the TCM that it had experienced an interruption in its supply voltage.

P1678 Hyundai Auto Trouble Code

Key on or engine running, then the PCM determined that the throttle position or throttle angle signal was unreliable for 1 second.Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins. Cost of diagnosing the P code Labor: 1.

The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. The theft deterrent system authenticates the security code programmed into each of these modules to prevent unauthorized vehicle operation. This authentication process includes the following steps: 1.

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When the ignition is turned ON or the door is unlocked by remote key the BCM and the key exchange security data to verify the correct key is used. The data exchange processes conducted use various encrypted data exchanges between each of the devices. P More Information Need more information on how to fix the P code? Get Access to Factory Service Manuals. Need more help? Get the P code diagnosed by a professional: Find a repair shop in your area. Related Information. P Comments Help us improve AutoCodes.

Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P code? Have you replaced any parts? Any information is appreciated. Repair Importance Level: 3. Why is the Engine Light ON? Home - About AutoCodes. Posted and Edit by AutoCodes.P engine code seems a kind of powertrain problem, we try to show one by one the meaning and the solution.

fault code p1678

Brief explanation of the P code and definition of P is the bottom side. MFG - Manufacturer Specific codes, which have a '1' as their second digit to indicate they are unique to a particular vehicle make or model. These special codes were deemed necessary by the vehicle manufacturers so they could provide additional diagnostic information beyond the basic list of generic OBD II codes for all kinds of faults, not just emissions-related faults.

The original multi-displacement system turned off opposite pairs of cylinders, allowing the engine to have three different configurations and displacements. P code had an elaborate diagnostics procedure, including showing engine trouble codes on the air conditionning display.

However, the system was troublesome, misunderstood by customers, and a rash of unpredictable failures led to the technology being quickly retired. Is the fuel pump sometimes not priming when you turn the key to ON II?

Start by measuring the fuel pressure and checking whether you have bright white-bluish spark at all four plugs. The mechanical timing is also something that you should check, as we mentioned above. When you see P engine fault code on your engine code reader this description will help you. Final Step: In the definitions listed below, there is a test drive recommended after you've completed any repairs to see if the condition is fixed.

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Before you take a test drive after a repair, always erase the P Code s first. This will turn the check engine light off and then you will know if the check engine light returns, you've got further diagnostics to complete.

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This engine code information is presented for information purposes only. This is not intended as repair advice and we are not responsible for any actions you take on any vehicle. Example: P How To Fix P?P Auto Trouble Code on vehicles with electronically controlled automatic transmissions, the shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission.

With P code so start with the basics like a fuel pressure and fuel volume test. Or, you can start on the electrical side by doing a voltage drop on both the power and ground connections for the fuel pump. Some shops are reporting corrosion on the fuel pump ground that reduces power and fuel pressure.

The problem is caused by the variable cylinder management system switching on and off during light throttle conditions, at cruising speeds, or when driving on flat roads. The constant switching causes excessive oil consumption and the trouble codes appear when oil pressure drops to the point where it can no longer operate the VCM system. This DTC is set if the transition is not detected. All auto trouble codes with car brands.

P Auto Trouble Code P Auto Trouble Code on vehicles with electronically controlled automatic transmissions, the shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission.

P U B C Example: Example: P Tata OBD2 specifically refers to the camshaft cam timing. In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set. Evaporative emissions systems test for a leak in the fuel tank and associated hoses. To perform the test, the computer pulls a vacuum and checks to see if the vacuum holds. Each car maker uses a different techniques to check, but most often it's some type of fuel tank pressure sensor.

Disconnected, dirty or fouled spark plugs are common causes for engines that won't start. Spark plugs typically need to be replaced every season or 25 hours of use.

P1678 Ford Auto Trouble Code

You should also check that the spark plug gap is set properly. If your spark plugs look good, problems with your ignition system can also preventing a spark. These can range from a faulty spark plug lead, shorted kill switch or flywheel key damage.

OBD 2 P Tata code and tailpipe testing are two different approaches to identify vehicles in need of repair. The OBD system looks for broken or malfunctioning emissions control components while tailpipe tests sample a vehicle's exhaust to see if it is above or below certain prescribed limits.

Given the robust nature of today's emissions control components, it is entirely possible for an individual component to malfunction without leading to an immediate increase in emissions at the tailpipe. In such cases, other components like the catalyst can temporarily compensate for the part that is broken however, these other components can only do double duty for so long before they, too, begin to malfunction.

Because of its ability to monitor individual components, OBD is able to give motorists an early warning that repairs are needed; it is because of this early warning capability that OBD will sometimes fail vehicles that would otherwise pass a tailpipe test. All auto trouble codes with car brands. P Tata Possible Solution: Disconnected, dirty or fouled spark plugs are common causes for engines that won't start. P U B C Example: Example: P Ford OBD2 reports a sensor fault, replacement of the sensor is unlikely to resolve the underlying problem.

The fault is most likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself. The leak detection pump is part of the evaporative emissions system. This system tests the fuel system to make sure it is not leaking fuel vapors into the air. The system pulls a vacuum on the fuel system and holds it for a period of time. In-line Ford engines, along with those of most other manufacturers, begin the numbering of cylinders at the front and proceed in numerical order toward the back.

In the V-engine design, Ford follows a similar design with the number one cylinder at the front left of the engine.

OBD II Fault Code P1678 :

In the V-6 configuration, cylinder 4 is at the front right of the engine and in a V-8, cylinder number 5 is in that location. Other manufacturers sometimes use an alternating pattern in the V-engines. When you turn on the ignition, the Service Engine Soon or Check Engine P Ford light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions.

After this brief flash, the light should stay off while you drive as long as no problems are detected. You'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the car! All auto trouble codes with car brands. P Ford Possible Solution: In-line Ford engines, along with those of most other manufacturers, begin the numbering of cylinders at the front and proceed in numerical order toward the back.

P U B C Example: Example:


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