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Detonation circuit my codes on my ecu test pointed me to 12 and 34 . 12 is the detonation cicuit 34 is the air flow meter or handler where would the dtonation circuit be located or what is another name for detonation circuit ?

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SOURCE: where or what is a detoneation circuit

The detonation sensor is usually located on the side of the engine block - it is a cylindrical sensor that screws into the side of the block (and has one electrical conection) that picks up engine detonation and relays that back to the ECM to ****** the ignition timing when "spark knock" occurs. I'd bet the Air Flow meter is the culprit however, det sensor rarely go bad....

Posted on Feb 01, 2009

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2 Answers

22re trouble code 24 and 32


24 Intake air temp sensor and 32 mass air flow meter circuit or vacuum switch failure . Air temp sensor is internal in the vane style mass air flow meter it is not replaceable you will need a new meter.

Mar 21, 2014 | 1994 Toyota Pickup

1 Answer

01 saturn pcm


is this a DIY question, do say.?
still 102? you didnt say. post all DTCs
live, stored and pending.
use a real scan tool , in usa?)

Mass Air Flow (MAF) sensor or circuit

Read more at: http://www.obd-codes.com/p0102


this is the AIr meter (measure air mass not volume)
it reads low, but can be caused by.
1: air leaks (aka vacuum leaks) in the whole induction system.
from air meter , to the intake valves. the whole path !!!
2: too low idle speed, 800 is par. if lower fix that now.

the test is simple. using a voltmeter to see if the air meter is really bad. boy scout simple.
ask for the tests.
or login to
allldata.com
and read 102 then when there, go to MAF page and read that page
it shows the simple tests. (the saturn FSM does too)

im not sure the defunct Saturn co. uses PCM. if it does, its hopeless.(DIY)
most MAFS are analog and any cheap meter works, any.
PCM is modulated, (a ford trick. to avoid.)

I check my MAFs. from keyon,, then start
then racing in idle to 3000 RPM
and if a A/T , i do a A/T tranny stall RPM test. (see tranny tests)
as the same time, this act puts huge load on the engine.
(a free dyno) for 5 seconds max, (overheats tranny the trannysections say that, and is true. read it.
then see output of MAF hit near 4v. this is a good maf.
can elaborate and show pages doing all this and more.
just ask, if all that is too hard,
find an ASE mech, he knows how to do this.

keep in mind no ECu on earth knows what is wrong,
it only can report bad tests. NEVER WHY!
Only the mech finds the truth. by adding more tests.

Oct 15, 2013 | Cars & Trucks

1 Answer

Error code P0100 on Chrysler Voyager Diesel


As far as I know, we don't have Chrysler diesels in the USA, so I can't comment beyond saying the code is for a problem with the Mass air flow meter circuit.
The meter and circuit would need to be tested, as well as the connector hose from the meter to the intake.

Feb 19, 2013 | Chrysler Town & Country Cars & Trucks

1 Answer

2003 Grand Am Has P0102


It is not an ECM/PCM problem.
P0102 - Mass or Volume Air Flow Circuit Low Input
Possible causes- Faulty mass air flow sensor
- Dirty mass air flow sensor
- Dirty air filter
- Mass air flow sensor harness is open or shorted
- Mass air flow sensor electrical circuit poor connection
- Intake air leaks Tech notes Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor

Sep 27, 2012 | 2003 Pontiac Grand Am

1 Answer

I need a honda car code , i can't turn on my radio


service manual.
Code Description Possible Cause
0 ECU / ECU signal No signal to ECU
1 Oxygen sensor circuit Oxygen sensor or circuit, ECU
2 Oxygen sensor circuit Oxygen sensor or circuit, ECU
3 MAP sensor circuit Map sensor circuit
4 CKP sensor / engine speed (RPM) Crank angle sensor or circuit, ECU
sensor
5 MAP sensor circuit MAP sensor or circuit, mechanical
problem
6 ECT sensor circuit ECT sensor or circuit, automatic
transaxle control unit
7 TPS / Angle Sensor TPS sensor or circuit, automatic
transaxle control unit
8 CKP sensor / engine speed (RPM) Crank angle sensor or circuit, ECU
sensor
9 CMP sensor CMP sensor or circuit
10 IAT sensor IAT sensor or circuit
11 Idle Mixture Adjuster Sensor Idle mixture adjuster sensor or
circuit
12 EGR system fault No EGR action, faulty EGR valve
13 BARO sensor circuit BARO sensor or circuit
14 Idle Air Control valve circuit / ECU Open or shorted out ignition signal
circuit / No signal to ECU
15 Ignition Output signal Open or shorted ignition output
signal circuit
16 Fuel Injector Circuit Open or shorted fuel injector
circuit
17 VSS circuit VSS sensor or circuit
18 Ignition Timing Adjuster Open or shorted signal circuit
19 A/T Lock-up control solenoid Open or shorted signal circuit,
Lock-up control solenoid lock-up solenoid
20 Electrical Load Detector / Sensor Electrical load detector or circuit
Honda/Acura
Fault Code Definitions (21 - 59)
Chapter 3 22
Code Description Possible Cause
21 Spool Solenoid Valve Open or shorted signal circuit,
spool solenoid valve
22 Valve Timing Electronic Oil Open or shorted signal circuit,
pressure switch valve timing oil pressure switch
23 Knock sensor circuit Knock sensor or circuit
30 AT / ECU communication signal A AT control unit, ECU
31 AT / ECU communication signal B AT control unit, ECU
35 Traction control / ECU / signal Traction control module, ECU
36 Traction control / ECU / signal Traction control module, ECU
41 Oxygen sensor heater - left side Oxygen sensor / heater or circuit
42 Oxygen sensor heater - right side Oxygen sensor / heater or circuit
43 Fuel Supply system - left side Oxygen sensor or circuit, fuel
system
44 Fuel Supply system - right side Oxygen sensor or circuit, fuel
system
45 Fuel metering - left side Injector control circuit, incorrect
fuel metering
46 Fuel metering - right side Injector control circuit, incorrect
fuel metering
48 Heated oxygen sensor Oxygen sensor or circuit
53 Right Knock Sensor Right knock sensor or circuit
54 CKP sensor 2 CKP sensor 2 or circuit
59 CMP sensor 2 CMP sensor 2 or circuit

Dec 28, 2010 | 1994 Honda Accord

1 Answer

98 chevy lumina. Code 113, 102, 171. runs then


the code 113 is intake air temp cicuit, high input.
the code 102 is mass air flow volume air flow circuit, low input.
the code 171 is system too lean (bank 1)
I sure hope this helps you out. Dont sound like anything too major though

Sep 23, 2009 | Chevrolet Lumina Cars & Trucks

1 Answer

Check Enginge Light, Jerky Driving


Good old case of leaky air intake tube.

The air flow meter read the temp and air density to the computer ECU but the leaky air tube (between air flow meter to intake spot on the engine ADD A LOT MOVE air and offset the temp.

So you engine ECU see on set of info and the ACTUAL air density and air temp. are different.

SEAL the tube the best you can.


Vacuum leak can also show the same symptom.

Jul 16, 2009 | 2004 Jaguar X-Type

1 Answer

Where or what is a detoneation circuit


The detonation sensor is usually located on the side of the engine block - it is a cylindrical sensor that screws into the side of the block (and has one electrical conection) that picks up engine detonation and relays that back to the ECM to ****** the ignition timing when "spark knock" occurs. I'd bet the Air Flow meter is the culprit however, det sensor rarely go bad....

Jan 31, 2009 | 1993 Nissan Pathfinder

1 Answer

2001 malibu shifts rough


code p0113 means: IAT sensor high temp

and the solution:
The Intake air temp sensor is located inside the air flow meter and uses yellow and black wire and the black wire. IAT sensor circuit code P0113 indicating excessively high voltage or (Open Circuit) the ECM is either not seeing the correct voltages at terminals 66 and 80 under the dash at the ecm. It could be as simple as a broken wire under the insulation right at the air flow meter, Or a little worse a bad air flow meter. There are cheeper remanufactured Aair flow meters available at Nissan for your car around $150 instead of $400 like they used to be new.

Jun 26, 2008 | 2001 Chevrolet Malibu

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