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I have a code on a 2007 business class with a Mercedes engine that reads Ecu 128 sid 231 can anyone tell me what it means

231 something to do fuel pump,thermostat open,replaced.check fuse and relay fuel pump.

Jan 28, 2016 | Cars & Trucks

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Need to find temperature sensor

find as in where to buy>?
find as in where is it on car.? (i bet its ok)
why not post the symptoms....?????
is this a dash gauge overheated , or under heat, reason?

this car has no dash guage sensor. (dedicated)
the 2005 , the dash guage, gets its temperature from the ECU
and the ECU gets that from the ECT sensor

so scan the ECU with any $9 scan tool (barrow one, may autostore loan them, do so)
then scan it, is temp at 180F or more holding?
if yes, its NOT the ECT,
post symptoms....
when you scan the PCM, it has ECT parameter PID, look
at that. and see what it is , it will not lie. its very reliable.
his is the plot of own warming up.

this graph is of a G16, that is a bad thermostat,
its bad and very very slow... double bad. blue line....
the numbers here are dead accurate.

using a scan tool ends most guessing.
this is not a code reader (near useless) but a real scan tool

Jan 25, 2014 | 2005 Suzuki Reno

1 Answer

I have a Volvo 670 2007 D12 and I keep getting fault codes ECU Maintenance MID 128 PID 27 FMI 5 and MID 128 PID 245 FMI 9. Does anyone know what they mean?

These code are specific to Volvo and you will probably need to contact a Volvo service department to have them explained.

Aug 23, 2013 | Cars & Trucks

2 Answers

Engine Faults on a 2009 Volvo VNL670 w/ a Cummins ISX

i have a 2009 volvo 670 automatic transmission. i have a fault code for the transmission. RANGE LOW ACTUATOR
( VALR )
does anyone what those codes mean?

May 03, 2013 | 2005 Volvo XC90

1 Answer

103 fmi1, 103 fmi10, pid fmi157, pid fmi18

Diagnostics check required, sound like the immobilizer cuts off, this can be caused by several factors, once you check the ECU you'll have the answer

Nov 14, 2011 | Cars & Trucks

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An engine control unit (ECU) is an electronic control unit which controls various aspects of an internal combustion engine's operation. The simplest ECUs control only the quantity of fuel injected into each cylinder each engine cycle. More advanced ECUs found on most modern cars also control the ignition timing, variable valve timing (VVT), the level of boost maintained by the turbocharger (in turbocharged cars), and other peripherals.
ECUs determine the quantity of fuel, ignition timing and other parameters by monitoring the engine through sensors. These can include, MAP sensor, throttle position sensor, air temperature sensor, oxygen sensor and many others. Often this monitoring and control is done using a control loop (such as a PID controller).
Before ECUs, most engine parameters were fixed. The quantity of fuel per cylinder per engine cycle was determined by a carburetor or injector pump.

Nov 09, 2008 | 1996 Mercedes-Benz C-Class

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