1996 HONDA CIVIC Workshop Manual

gearbox winter tires TPMS lock service schedule boot

Page 433 of 2189

HONDA CIVIC 1996 6.G Workshop Manual PGM-FI System
Fuel Supply System
D017-il Th""""ntool indicates Diagnostic Troubte Code {DTC) p0171;Thefuet system istoo lean.
1P0172 | fne scan tool indicates Dlagnostic Trouble Code (DTC) P0172:Thefu

Page 434 of 2189

$HONDA CIVIC 1996 6.G Workshop Manual t Troubleshooting Flowchart l NO a-,-:- - YES - The MIL ha3 b€on rePorled on.- DTC P0171 a^dlot P0172 arc stored, is the fuel pressure OK? Check the fuel pt€ssure regulator and fusl re{urn pipe.l$

Page 435 of 2189

HONDA CIVIC 1996 6.G Workshop Manual PGM-FI System
Random Misfire
lFoioo l*u o, [FTioo l* * and
The scan tool indicates Diagnostic Trouble Code (DTC)
P0300*5 or P1300*3 *1 and some of P0301 - P0304:Random misfire.Description
Misfire de

PGM-FI System
Random Misfire
lFoioo l*u o, [FTioo l*' *' and
The scan tool indicates Diagnostic Trouble Code (DTC)
P0300*5 or P1300*3 *1 and some of P0301 - P0304:Random misfire.Description
Misfire detection is accomplished by monitoring the crankshaft speed with the crankshaft speed fluctuation (CKF) sensorwhich is attached to the crankshaft.
lf misfiring strong enough to damage the catalyst is detected. the MIL will blink during the time of its occurrence, and DTCP0300*5 or P1300*3'*' and some of DTCs P0301 through P0304 will be stored. Then, after misfire has ceased, the MIL willcome on.
lf misfiring that increases emissions is detected during two consecutive driving cycles, the MIL will come on, and DTCP0300*5 or P1300*3 *a and some of DTCS P0301 through P0304 will be stored.NOTE: lf some of the DTCS listed below are stored at the same time as a misfire DTC. troubleshoot those DTCS first, thenrecheck for the misfire DTC.
P0106*4. P0107. P0108, P1128*3 *5, Pl129*3 *5; MAP sensorP0131. P0132: HO2S
P0171, P0112i Fuel metering
P0401, P 1491, P1498: EGR svstem*1P0505: ldle Control SystemP1253: VTEC System*,P1361, P1362: TDC sensorP1381, Pl382: CYP sensorP1508: IAC valve
Possible Cause. Fuel pump insufficient fuel pressure, amount of flow. Fuel line clogging, blockage, leakage. Fuel filter clogging. Fuel pressure regulator stuck open. EGR system malfunction*1. Distributormalfunction. lgnition coil wire open. leakage *l: D16Y5 engine. lgnition control module malfunction *2: D16Y5, D16Y8, Bt6A2 engine. MAP sensor range/performance, poor response*r *3: '97 models. Valves carbon deposit *4;'96 models. Compression low *5: '98 - 00 models. IAC valve malfunctionr.. VTEC system malfunction*,. Fuel does not meet Owner's Manual spec., lackoffuel. HO2S. HO2S circuit
Troubleshooting
By test-driving, determine the conditions during which misfire occurs, Depending on these conditions, test in the orderdescribed in the table below.
Possible
- --^ ---
rage
causeEGR*1
system
Crankshaft
position (CKP)
sensor
Fuel
pressure
Distributor and
lgnition wirestcMClearance
tAc
ValveMAP
sensor
section 611-230,
231section 23section 23section 611-19411
Only low rpm and
loado@@oo
Only accelerating@o@@
Only high rpm and
toaooo@
Not specificoo@
NOTE: lf misfire doesn't recur, some possible causes are fuel that doesn't meet owne/s manualspec, lack of fuel, carbon deposits on spark plug, etc.
1 1-1 66
I
P0304

Page 436 of 2189

HONDA CIVIC 1996 6.G Workshop Manual I
Misfire Detected in One Cylinder
P0301 | The scan tool indicates Diagnostic Trouble Code (DTC) P0301: Cylinder 1 misfire detected.
[F03O2l 16"""untool indicates Diagnostic Trouble code (DTc) P0302:

Page 437 of 2189

HONDA CIVIC 1996 6.G Workshop Manual PGM-FI System
Misfire in Detected One Gylinder (contdl
Troubleshootin g Flowchart
NOTE:. lf there is no treeze data of misfiring,just clear the DTC.. It there is no freeze data of misfiring,test driv

Page 438 of 2189

HONDA CIVIC 1996 6.G Workshop Manual I
ll
t
NOTE: lf there is no freeze data of mis_
firing, test drives under various condi
tions are necessary.
(From page 11168)
Intermittent misfire due to sparkplug fouling, etc. (firing is OK arthis

Page 439 of 2189

HONDA CIVIC 1996 6.G Workshop Manual PGM-FI System
Knock Sensor (KSl (96 - 98 D16Y5 engine with CW and96 - 98 D16Y8
engine)
Forr-l I,3,.""""
tool indicates Diagnostic Trouble Code (DTC) P0325: A malfunction in the circuit of the Knock

Page 440 of 2189

HONDA CIVIC 1996 6.G Workshop Manual Knock sensor (Ks) r99 - 00 D16Y5 engine with cw, 99 - 00 D16Y8 engine and
816A2 engine
The scan tool indicates Diagnostic Trouble Code (DTC) P0325: A malfunction in the circuit of the Knock Sensor
{K

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