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No problem with engine, running normal but service engine light on with diagnosis codes 1131 and 1151. What do the codes indicate ?

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1131 is a more broad code that says you have a fuel trim issue, and lists many many possible causes. 1151 narrows down the issue and hints towards a lean-mixture picked up by your heated oxygen sensors.
It indicated that the following should be diagnosed: Oxygen sensors Fuel injectors Harness circuits to the injectors, and oxygen sensors. Vacuum systems Powertrain Control Module.
I hope this helps

Posted on Mar 27, 2011

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Posted on Jan 02, 2017

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While driving engine light comes on - engine only 1500RPM and no reaction on fuel pedal if i switch engine completely of engine runs normally for plus minus 500m then the same problem thank you


Initially a code read should provide an answer of some sort and is the first step to a diagnosis.

In most cases when the engine management detects a fault it will record it, switch on the light and then switch to a get-you-home programme when often the driver will find little or no difference in driveability.
The main exceptions are a faulty cam or crank sensor which will stop or almost stop the engine and this might be your problem.

It is wise to check the exact function of the light with the vehicle handbook. Sometimes there is more than one light to indicate a fault and apart from the check engine light there could be an emissions light or an overboost light for turbo models.

Sep 23, 2016 | Cars & Trucks

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Error codes PO600 and P1747


P1747 CAN-Bus Monitoring
P0600 Serial Communication Link
These codes indicate a communications failure between the transmission control unit and ABS/traction system. These modules share information which allow them to operate properly. It is likely that one of the modules has an internal fault.
With these generic codes it is not possible to determine the exact nature of the issue. Your best bet is going to be a dealer diagnosis using their sophisticated equipment so that the root cause can be determined and eliminate any guess work. The p codes are too generic in this case, unfortunately.

Jun 03, 2016 | 2001 BMW X5 4.4

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I have a 2001 mustang bullitt that is showing service engine light on. Took it to mechanic and he put 2 different machines on it to show code for problem. No codes coming up and he can't turn off the...


There is a diagnostic procedure in the factory service repair manual for engine light lit ,no codes . Did you take it to ford dealer ? MIL - is referring to check engine , service engine soon etc...
  • MIL always on when engine is running (no DTCs):
  • MIL circuits
  • For Focus, Mustang, Town Car, Continental, LS6/LS8, Escape, Windstar, F-150, Expedition and Navigator/Blackwood:
  • Instrument Cluster, Section 413-01 of the Workshop Manual.
  • All Others:
  • GO to NB1

SERVICE ENGINE SOON indicator After the engine is started, the SERVICE ENGINE SOON indicator will prove out for a duration of three seconds. If the instrument cluster does not receive a message from the PCM within five seconds, the instrument cluster will illuminate the SERVICE ENGINE SOON indicator and log a diagnostic trouble code (DTC).

  • An indicator is inoperative/always on - SERVICE ENGINE SOON
  • Circuitry.
  • Bulb.
  • Instrument cluster.
  • PCM.
  • GO to Pinpoint Test P .

PINPOINT TEST P: AN INDICATOR IS INOPERATIVE/ALWAYS ON - SERVICE ENGINE SOON CONDITIONS DETAILS/RESULTS/ACTIONS P1 CARRY OUT THE INSTRUMENT CLUSTER SERVICE ENGINE SOON INDICATOR ACTIVE COMMAND Trigger the HEC active command MIL.
  • Did the SERVICE ENGINE SOON indicator illuminate?
Yes REFER to Powertrain Control/Emissions Diagnosis (PC/ED) manual.

No INSTALL a new instrument cluster; REFER to Instrument Cluster . CLEAR the DTCs. REPEAT the self-test.

Jul 18, 2017 | 2001 Ford Mustang

1 Answer

Check engine light on and high beam indicator does not come on when beams are in use (97 cavalier)


Hello
When the service engine soon light (Also called the check engine light or engine management light) is turned on this is to alert you to the fact that Powertrain Control Module (computer) has detected a failure somewhere in the systems it controls you may not feel any difference in the way the engine runs, this can be the transmission or the engine or emission system, there are fault codes set in the modules memory for these faults. What needs to happen now is to have the powertrain control module scanned with a special tool called an OBD2 electronic engine control scanner or a OBD2 code reader. Once the code(s) are read then you must perform the diagnostics for each code and make the appropriate repairs based on the findings of the diagnosis that was performed, this is called doing "Pinpoint" testing.

Oct 11, 2012 | Cars & Trucks

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I own a 2000 Alero and for the past 2 weeks it has been stalling at the stop lights but runs fine on the highway. The service engine light has come on. Is it safe to run for antoher day until I get it


Hello
When the service engine soon light (Also called the check engine light or engine management light) is turned on this is to alert you to the fact that Powertrain Control Module (computer) has detected a failure somewhere in the systems it controls you may not feel any difference in the way the engine runs, this can be the transmission or the engine or emission system, there are fault codes set in the modules memory for these faults. What needs to happen now is to have the powertrain control module scanned with a special tool called an OBD2 electronic engine control scanner or a OBD2 code reader. Once the code(s) are read then you must perform the diagnostics for each code and make the appropriate repairs based on the findings of the diagnosis that was performed, this is called doing "Pinpoint" testing.

Sep 06, 2012 | 2000 Oldsmobile Alero

1 Answer

Malfunction Indicator Light is on in my 2003 Hyundai XG350. It is not blinking. Won't have money to repair for a week. Can I still drive it? If not, are there any affordable service centers that offer...


When a 'check engine light' (MIL=Malfunction Indicator Lamp) is turned on, there is a DTC (Diagnostic Trouble Code) set/stored in the ECM/PCM (Engine Control Module/Powertrain Control Module). This code identifies which engine management system component/function experienced a malfunction. Once you pull/read this code, you may begin diagnosis.

Sep 11, 2011 | Hyundai XG350 Cars & Trucks

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ABS light comes on... but no noticble degradation in operation etc.


Most likely a wheel speed sensor, hopefully... The only thing that will change when the ABS light is on is that the ABS will not function as long as the indicator is on. I hope this info helps.

When the airbag system is in functioning condition, the airbag warning light will remain on for about 7 seconds and go out when the ignition switch is set to ON .

If there is any malfunction, the airbag warning light will either stay on or off continuously. In such cases, perform on-board diagnostic in accordance with the specified procedure to determine trouble codes.


  1. Turn ignition switch ON (with engine OFF ).
85091723



  1. Connect DIAG. terminal to No.2 terminal of diagnosis connector located inside lower cover.
  2. Check in accordance with the trouble code indicated by the AIRBAG warning light, and record the trouble codes.
  3. Turn the ignition switch "OFF " and remove the DIAG. terminal from No.2 terminal of diagnosis connector.
85091724


HOW TO READ TROUBLE CODES
The ABS lamp flashes a code corresponding to the faulty parts.

The long segment (1.2 secs on) indicates a "ten", and the short segment (0.3 secs on) indicates a "one".





NOTE: This is the only information provided by the manufacturer for clearing diagnostic trouble codes.

97511505


CLEAR MEMORY
After eliminating problem as per trouble code, clear memory as follows:

Make sure ignition switch is ON (and engine off). Connect one DIAG. terminal (1) on diagnosis connector (2) terminal No.1.

where warning light is flashing, connect the other DIAG. terminal (3) on terminal No. 2 for at least three seconds . After memory is cleared, normal warning light flashing rate resumes. (Warning light flashes every 0.6 seconds (ON-OFF operation.) Memory cannot be cleared if any problem exists.

After clear memory and then DIAG. terminals (1) and (3), extract from diagnosis connector (2)

Jul 27, 2011 | 1999 Subaru Legacy

1 Answer

Check engine light comes on


A malfunction indicator lamp (MIL), commonly referred to as the "Check Engine Light" is an indicator of malfunction of the computerized engine management system. It is found on the instrument console of most automobiles. When illuminated, it is typically either an amber or red color. On vehicles equipped with OBD-II, the light has two stages: steady (indicating a minor fault such as a loose gas cap or failing oxygen sensor) and flashing (indicating a severe fault, that will eventually destroy the catalytic converter, such as a misfire). When the MIL is lit, the engine control unit stores a fault code related to the malfunction, which can be retrieved with a scan tool and used for further diagnosis. The malfunction indicator lamp is usually labeled with the text check engine, service engine soon, check engine soon, or a picture of an engine.
The MIL appeared in the early 80s along with computerized engine controls. Even the earliest systems, such as GM's CCC (Computer Command Carburetor) system had self diagnosis functionality. When the computer detected a fault, it illuminated the MIL. Up until OBDII, on most cars the MIL could output codes, when two pins on the ALDL are jumped, the light would flash the codes, for instance (blink) (pause) (blink) (blink) for code 12. Some manufacturers retained this feature even after OBDII, such as Honda.

Hope this help (remember comment and rated this). Good luck.

May 09, 2010 | 1995 Toyota Camry

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