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B1121 definition code for Mercedes benz c240 My car it's running great but I resiving this code


Go to OBD2 codes. Put in the year make & model. Or google it B1121 Meaning :

Body Code
ProblemB1121 Meaning :
b
Body Code
Problem is antilock brake system, electronic suspension and steering systems.
1
MFG - Manufacturer Specific
1
Transmission
2
Air Conditioning (A/C) Clutch Feedback Circuit High Voltage
1
TFP Valve Position Switch-Drive Without Drive Ratio is antilock brake system, electronic suspension and steering systems.
1
MFG - Manufacturer Specific
1
Transmission
2
Air Conditioning (A/C) Clutch Feedback Circuit High Voltage
1
TFP Valve Position Switch-Drive Without Drive Ratiogle it

Aug 09, 2017 | Cars & Trucks

1 Answer

B1121 definition code


B1121 Meaning :

b Body Code
Problem is antilock brake system, electronic suspension and steering systems. 1 MFG - Manufacturer Specific 1 Transmission 2 Air Conditioning (A/C) Clutch Feedback Circuit High Voltage 1 TFP Valve Position Switch-Drive Without Drive Ratio

Aug 09, 2017 | Cars & Trucks

1 Answer

Service engine soon light is on, and the codes its giving are f110p and 1891p


P1891 20500 System Voltage High Input
This fault sets when the alternator is failing. But instead of failing where the voltage is too low it is too high. This is just as bad if not worse than too low. Your 7 series is full of computers and when they see this high voltage they start to go into failsafe to protect themselves. The overvoltage could even cause modules(computers) to fail.
Some modules very effected by this is the DSC control unit, EGS Transmission control unit. This type of problem will come and go due to the alternator is intermittently overcharging.
Now there MIGHT be other things going on but it ALWAYS is a bad alternator with the overvoltage fault in my experience. This alternator is a bit hard to do so I do recommend having the dealer replace it. Make sure you tell them about the overvoltage and even this post as most tech's easily overlook this fault and go chasing the "failsafe" problem and never stop to look at the big picture --system voltage.
I hope this information is helpful. Please accept and let me know if I can help you further.Thank you.

Jun 25, 2014 | 2004 BMW 745i

1 Answer

Overvoltage message ford MONDEO


Over voltage would likely be related to the alternator voltage regulator. Electrics can cause intermittent problems - You can easily measure the voltage with a multimeter 13.5 - 14.5 volts would be pretty typical if the voltage is much higher than this then the regulator needs attention.

Jan 16, 2013 | 2008 Ford Mondeo 1.8

1 Answer

What does overvoltage stop quickly on a volvo s60 means


the overvoltage warning is telling you that the onboard commputer has seen to much volatge this is caused by your altnator there is a voltage regulator in the altnator that keeps the voltage output around 13.6 any higher can do perpent damage to the electronics on your car that is why it says stop quickly.

Jan 27, 2011 | 2002 Volvo C70

1 Answer

98 dakota headlights flash off and on, light switch has been replaced, what next? would overvoltage cause problem?


this is caused by the bcm(body control module) which is the fuse block inside the vehicle. chryslers have a bad problem with wiring issues.

Jan 20, 2010 | 1999 Dodge Dakota

1 Answer

85 nissan 4x4


Possibly a bad coil causing an overvoltage problem.

Mar 21, 2009 | 1997 Nissan Pickup

1 Answer

97 MERCURY VILLAGER DIES AFTER 10 TO 15 MINS


A vehicle alternator control device in which, when a signal detection portion detects a determined input signal, an operating mode of an overvoltage warning portion is switched to a detection operating mode by an overvoltage warning operating mode switching portion. In the detection operating mode, the overvoltage warning portion is activated when a voltage below a determined voltage has continued for a time that is less than a determined time. Accordingly, checks related to the operation of the overvoltage warning portion can be completed in a short time at a plant or the like.

Estimaternotfree@yahoo.com

Mar 01, 2009 | 1997 Mercury Villager

1 Answer

Alternator overvoltaged, car won't start no spark.


Look in the fuse box under the dash for more blown fuse, advise of which ones are blown.

Dec 08, 2008 | 1991 Toyota Camry

1 Answer

1995 jeep cherokee 4.0 2wd country overvoltage


voltage regulator could be bad but i think its your battery draining or putting a strain on the atl then the v regulator will try to regulate
its job by upping the juce

Nov 29, 2008 | 1998 Jeep Cherokee

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