question about CEL codes. 1, 12, 18
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Joined: Dec 2005
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From: Cincinnati, Oh
question about CEL codes. 1, 12, 18
so i got the codes for my 91 s5 n/a
they came up:
1. Trailing Ignition coil
12. Throttle Sensor (full range)
18. Throttle Sensor (narrow range)
as for #1, i checked my wires and plugs, they were both fine. i replaced plugs and wires w/ ngk in DEC 06. so not even a year ago.
as for 12 and 18 i have no idea what to check or fix.
i did search but couldnt find anything.
so any help is appercaited.
thanks
Nick
they came up:
1. Trailing Ignition coil
12. Throttle Sensor (full range)
18. Throttle Sensor (narrow range)
as for #1, i checked my wires and plugs, they were both fine. i replaced plugs and wires w/ ngk in DEC 06. so not even a year ago.
as for 12 and 18 i have no idea what to check or fix.
i did search but couldnt find anything.
so any help is appercaited.
thanks
Nick
i through codes 12 and 18 also and i was told to adjust the tps.
i was also given sites for adjusting the tps but it was hard to understand but here is one of them.
http://www.rotorwiki.com/index.php/TPS_Adjustment
i was also given sites for adjusting the tps but it was hard to understand but here is one of them.
http://www.rotorwiki.com/index.php/TPS_Adjustment
I'm a boost creep...
Joined: Jan 2002
Posts: 15,608
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From: Auckland, New Zealand
Nothing wrong with checking them, but this error code has nothing to do with the plugs and wires, only the ignition coil itself.
The FSM's Fuel & Emission Control Systems chapter has troubleshooting procedures for every error code. Go to the self-diagnosis section on page F1-22 and follow the instructions. Tell us what you find.
The FSM's Fuel & Emission Control Systems chapter has troubleshooting procedures for every error code. Go to the self-diagnosis section on page F1-22 and follow the instructions. Tell us what you find.
Thread Starter
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Joined: Dec 2005
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From: Cincinnati, Oh
Code# Input Device malfunction Fail-safe function
01 trailing ignition coil malfunction of spark plug, broken wire, short circuit Trailing side ignitions pulse cut 02 crank angle sensor (ne sensor) broken wire, short circuit fuel injection and ignition cut
03 crank angle sensor (g sensor) broken wire, short circuit fuel injection and ignition cut
05* knock sensor Broken wire, short circuit Ignition timming retarded
08 airflow meter (AFM) broken wire, short circuit basic fuel injection amount and fixed timing
09 water thermosensor broken wire, short circuit coolant temp fixed at 80 degrees C (176F)
10 intake air thermosensor (AFM) broken wire, short circuit intake air temp fixed at 20C (68F)
11 intake air thermosensor (engine) broken wire, short circuit intake air temp fixed at 20C (68F)
12 Throttle sensor (full range) broken wire, short circuit throttle valve opening angle signal fixed at 20% 13 pressure sensor (intake manifold) broken wire, short circuit intake pressure fixed at 760 mmHg (29.9 inhg)
14 atmospheric pressure sensor malfunctioning ECU at. Pressure fixed at 760 mmHg
15 oxygen sensor oxygen sensor output remains below 0.55v 80 sec. after F/B system operation beginning feedback system canceled(for EGI)
17 feedback system oxygen sensor output remains 0.55v 10 sec. after F/B system operation beginning feedback system canceled(for EGI)
18 throttle sensor (narrow range) broken wire, short circuit signal fixed at full open
20 metering oil pump position sensor broken wire, short circuit Mop fixed smallest open. basic fuel amount and timing fixed
27 metering oil pump (MOP) malfunctioning MOP, step motors, broken wire, short circuit, or malfunctioning ECU Mop fixed smallest open,basic fuel amount and timing fixed
37 metering oil pump (MOP) malfunctioning MOP, step motors, broken wire, short circuit, or malfunctioning ECU basic fuel amount and timing fixed
01 trailing ignition coil malfunction of spark plug, broken wire, short circuit Trailing side ignitions pulse cut 02 crank angle sensor (ne sensor) broken wire, short circuit fuel injection and ignition cut
03 crank angle sensor (g sensor) broken wire, short circuit fuel injection and ignition cut
05* knock sensor Broken wire, short circuit Ignition timming retarded
08 airflow meter (AFM) broken wire, short circuit basic fuel injection amount and fixed timing
09 water thermosensor broken wire, short circuit coolant temp fixed at 80 degrees C (176F)
10 intake air thermosensor (AFM) broken wire, short circuit intake air temp fixed at 20C (68F)
11 intake air thermosensor (engine) broken wire, short circuit intake air temp fixed at 20C (68F)
12 Throttle sensor (full range) broken wire, short circuit throttle valve opening angle signal fixed at 20% 13 pressure sensor (intake manifold) broken wire, short circuit intake pressure fixed at 760 mmHg (29.9 inhg)
14 atmospheric pressure sensor malfunctioning ECU at. Pressure fixed at 760 mmHg
15 oxygen sensor oxygen sensor output remains below 0.55v 80 sec. after F/B system operation beginning feedback system canceled(for EGI)
17 feedback system oxygen sensor output remains 0.55v 10 sec. after F/B system operation beginning feedback system canceled(for EGI)
18 throttle sensor (narrow range) broken wire, short circuit signal fixed at full open
20 metering oil pump position sensor broken wire, short circuit Mop fixed smallest open. basic fuel amount and timing fixed
27 metering oil pump (MOP) malfunctioning MOP, step motors, broken wire, short circuit, or malfunctioning ECU Mop fixed smallest open,basic fuel amount and timing fixed
37 metering oil pump (MOP) malfunctioning MOP, step motors, broken wire, short circuit, or malfunctioning ECU basic fuel amount and timing fixed
i found that some where, thats where i got my info from.
and thats why i thought it was just my plugs/ wires
but one question about all of this. my car still runs completely the same as when i bought it two years ago. no idle problems, no hesitation nothing. still pulls hard threw every gear. so i guess heres my question, should i fix it, or just let it go?
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I'm a boost creep...
Joined: Jan 2002
Posts: 15,608
Likes: 8
From: Auckland, New Zealand
should i fix it, or just let it go?
Thread Starter
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Joined: Dec 2005
Posts: 158
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From: Cincinnati, Oh
i already looked at the fsm.. it is all very confusing for me. i dont know how to test "continuity" and everything. should/can i buy a used tps from a junk yard? and ill probably end up just buying a new trailing coil also.
is that the best way to go about things, just to replace both?
as for cold starts. it will do its 3k rev then just idle fine until warm up.
the only problem i have is when i hot start it. if ive been driving a while, stop for gas or soemthing, then start it back up, its wants to stall so i have to give it gas until i get moving. but it doesnt have any problems after i bring it back down to idle.
is that the best way to go about things, just to replace both?
as for cold starts. it will do its 3k rev then just idle fine until warm up.
the only problem i have is when i hot start it. if ive been driving a while, stop for gas or soemthing, then start it back up, its wants to stall so i have to give it gas until i get moving. but it doesnt have any problems after i bring it back down to idle.
used TPS will most likely be blown also. It's rare to find a working one, I've only found one in the 20 or so that I've seen, and that was on a decently maintained car.
I'm a boost creep...
Joined: Jan 2002
Posts: 15,608
Likes: 8
From: Auckland, New Zealand
i already looked at the fsm.. it is all very confusing for me. i dont know how to test "continuity" and everything. should/can i buy a used tps from a junk yard? and ill probably end up just buying a new trailing coil also.
is that the best way to go about things, just to replace both?
is that the best way to go about things, just to replace both?
Testing continuity means sending an electrical signal down a wire to make sure there are no breaks, i.e. it's electrically continuous. This is done with a multimeter. If you don't have one or don't know how to use one, get someone who does to help you, or pay a mechanic.
Thread Starter
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Joined: Dec 2005
Posts: 158
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From: Cincinnati, Oh
i did check all the connectors and wires around the coil and tps they were a little dirty but none looked to be in bad shape. im going to clean them well this weekend and reset my ecu and go from there.
thanks for the help guys
Nick
thanks for the help guys
Nick
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