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Check engine light has P0685 code. Engine stalled while driving. What are the possible causes of this? Is this an expensive fix?

I was driving the car on the freeway. A couple of lights flashed on the dash board airbag, brake etc.It felt like I lost engine power for a couple of seconds--but I hit the gas and car kept moving. After a few minutes-same thing happened and the check engine light came on. Car continued to drive. After 10 minutes or so, the car stalled. Lost full engine power to the car and had to come to a complete stop.

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- Faulty Engine Control Module (ECM) power relay
- ECM power relay harness is open or shorted
- ECM power relay circuit poor electrical connection
- Faulty (ECM)

Posted on Apr 24, 2015

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Posted on Jan 02, 2017

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Wont start2004 dodge grand caravan sxt code p0685 show on dash


P0685 DODGE - Auto Shutdown Relay Control Circuit Failure
Possible causes - Faulty Engine Control Module (ECM) power relay
- ECM power relay harness is open or shorted
- ECM power relay circuit poor electrical connection
- Faulty (ECM
Possible symptoms:
Engine Light ON (or Service Engine Soon Warning Light) P0685 Dodge Description: Short or open in Auto Shutdown (ASD) relay circuit, this relay is under the hood in the relay center.

Oct 14, 2016 | 2004 Dodge Grand Caravan

1 Answer

Whats the codes p0685 an p0688 on a 2004 chrysler pacifica mean


P0685 CHRYSLER - Auto Shutdown Relay Control Circuit Failure

Short or open in Auto Shutdown (ASD) relay circuit
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
- ASD relay circuit is open or shorted
- Failed Auto Shutdown relay
- Failed ECM
Tech Notes
Check all the ECM fuses, if the fuses are OK try replacing the ASD relay.

P0688 CHRYSLER - Auto Shutdown Relay Control Circuit Low

The Front Control Module (FCM) has detected the supply voltage below an acceptable value
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
- ASD relay circuit is open or shorted
- Failed Auto Shutdown relay
- Failed ECM
Tech Notes
Check all the ECM fuses, if the fuses are OK try replacing the ASD relay.

Dec 29, 2014 | 2004 Chrysler Pacifica

1 Answer

P0685 fault code uk ford


p0685 refers to ECM power relay control---circuit open===causes--wiring--ECM relay
Replace this relay. Check the wiring from the coil to the distributor as there is a dead short after the coil somewhere for the fuse to blow and the coil to overheat.. You may have a electronic module failure either in the distributor or the ECM

Dec 31, 2013 | Chrysler Cars & Trucks

1 Answer

My isuzu kb 300tdi lx starts and drives nicely,but it has its check engine light staying on


It is very common for many vehicles to drive nicely with the Check Engine light on. This is why so many people simply ignore the light. (BAD MISTAKE)

The true fact is that the computer is trying to tell you that there is a malfunction in one of the many different systems and/or electrical circuits that are monitored by your onboard computer network. Some of the possible malfunctions are simple and do not require much in the way of diagnosis or repair. Other possible problems are not so easy.

At the very least, you are wasting expensive fuel. The engine computer cannot properly maintain the correct air/fuel ratio when there is a system malfunction and the light is on. At worst, you could be causing severe damage to some very high-priced parts of your car(including the engine and/or transmission and catalytic converters) if you continue to operate it with the light on. Chances are very high that the longer you drive it with the light on, the more expensive it will be to fix it when you do finally fix it.

The only way to find out the nature of the failure is to scan your onboard computer network and retrieve the Diagnostic Test Codes (DTCs) (AKA - Fault Codes) that have been recorded as a result of the malfunction. These codes are then used to identify the correct diagnostic and repair procedures.

Feb 16, 2012 | 1995 Isuzu Pickup

1 Answer

PO744 code 2001 infiniti qx4 how do i fix


CODE PO744 AUTOMATIC TRANSMISSION TORQUE CONVERTER CLUTCH SOLENOID VALVE FAULT. POSSIBLE CAUSE FAULTY TCC SOLENOID.CHECK TCC SOLENOID WIRING FOR DAMAGE.OR YOU COULD HAVE FAULTY TCM OR ECM. IF THE TCC SOLENOID IS FAULTY YOUR ENGINE WILL STALL OUT AT A RED LIGHT OR STOP SIGN.YOUR ENGINE WILL STALL OUT AT EVERY STOP THAT WOULD BE SIGN FAULTY TCC SOLENOID.IF ENGINE DONT STALL OUT THE TCC SOLENOID COULD COULD BE STUCK OPEN, IF YOUR TORQUE CONVERTER FAULTY IT WILL CAUSE PREMATURE LOCKUP STALLING OUT THE ENGINE.

Nov 01, 2011 | 2007 Infiniti QX4

1 Answer

I have a 2003 dodge dakota. 4.7l. I get codes p0685 and p0688. No start no spark. Relay is good. But voltage drops when using a voltage meter on one of the grounds in the pdc. Any live wire and that ground...


P0685 DODGE - Auto Shutdown Relay Control Circuit Failure
Symptoms - Engine Light ON (or Service Engine Soon Warning Light)

Possible causes - ASD relay circuit is open or shorted
- Failed Auto Shutdown relay
- Failed ECM
Tech notes Check all the ECM fuses, if the fuses are OK try replacing the ASD relay. P0685 DODGE Description Short or open in Auto Shutdown (ASD) relay circuit

P0688 DODGE - Auto Shutdown Relay Control Circuit Low
Symptoms - Engine Light ON (or Service Engine Soon Warning Light)

Possible causes - ASD relay circuit is open or shorted
- Failed Auto Shutdown relay
- Failed ECM
Tech notes Check all the ECM fuses, if the fuses are OK try replacing the ASD relay. P0688 DODGE Description The Front Control Module (FCM) has detected the supply voltage below an acceptable value

Jun 24, 2011 | 2003 Dodge Dakota Club Cab

1 Answer

2000 neon engine light comes on and off, stalls sometimes when at low idle.


Take it to an auto parts store that does free testing. They'll plug in a scanner to retrieve the codes for the Check Engine Light.

Look up the codes online to know whether you can fix it yourself.

DO IT SOON before something breaks causing expensive repairs.

GL,
TD

Jul 23, 2010 | 2000 Dodge Neon

2 Answers

The check engine light came on, then the next day while driving the car all the indicator lights began to flash and the car stalled and now it stalls out every time you come to a stop, what would cause...


There are a few possibilities but the easiest,& fastest, as well as cheapest usually, is to stop in at one of the major autoparts stores & ask for free fault code scan. If it reveals something very obvious is faulty, grab it while your there, if not, get back to us with the code(s) they told you, and we'll help you out.

Jul 17, 2009 | 2001 Ford Taurus

1 Answer

Check engine light was on then went off now back onagain


Q1: What to do if my "Check Engine" light is on?
A1: The simplest way is to visit your local dealer for proper diagnostic. They have all the equipment and information needed to correct the problem. The problem might even be covered by the manufacturers warranty and possibly repaired free of charge.

Q2: Is it safe to drive if my "Check Engine" light is on?
A2: It really depends what code is stored and what caused it. In worst cases driving with "Check engine" light may cause more damage to the vehicle. A car may even stall while driving. If your check engine light came on, I'd certainly recommend to visit your dealer or a mechanic as soon as possible, just to be on a safe side. If the Check Engine light is flashing, this means that the engine computer (ECM) has detected that your engine is misfiring, which could damage your catalytic converter. Have the your vehicle inspected as soon as possible.

Jun 19, 2008 | 2001 Hyundai Accent

1 Answer

'93 Aerostar-stalls while driving/scary-stalls in 'drive' at stops


Wow!!! Now that's a headfull of problems....
This could be a great many things...
Check these before you sell. I have a '93 Aerostar and can't live without it.
1. Check idle speed
2. Fuel filter may be clogged or water in the fuel system.
3. Choke improperly adjusted or sticking.
4. Distributor components damp or damaged.
5. Faulty emissions components.
6. Faulty or incorrectly gapped spark plugs/ Also check wires.
7. Vacuum leak at the carburetor/fuel injection unit or vacuum hoses.
8. On 1986 models, stalling during idle or deceleration may be caused by sludge in the throttlebody. (2.3 litre engine)
9. On 1986 & 1987 models with a 2.3 litre engine,hesitation or stalling during acceleration may be caused by carbon build-up on the intake valves.....I hope this helps!! Adios

May 23, 2008 | 1993 Ford Aerostar Extended

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