codes and description of trouble are as follows:
11- Timing belt skipped 1 tooth or more from initial learned value; Intermittent loss of either camshaft or crankshaft position sensor. No crank reference signal detected during engine cranking
12- Direct battery input to PCM was disconnected within the last 50 key-on cycles
13- No change in manifold absolute pressure (MAP) from start to run
14- Manifold absolute pressure (MAP) sensor voltage out of range
15- No vehicle speed sensor signal
17- Closed loop temp not reached or engine cold too long
21- 02 sensor problem (oxygen sensor), upstream or downstream
22- Engine coolant temp sensor out of range
23- Intake air temp sensor out of range
24- Throttle position sensor (TPS) out of range, or disagrees with MAP
25- Idle air control motor circuits problem, target idle not reached(+/- 200), vacuum leak found
27- Injector control circuit problem
31- Evaporator purge flow monitor failure or evaporator solenoid circuit problem
32- Exhaust gas recirculating (EGR) system failure or solenoid circuit problem
33- A/C clutch relay circuit problem
34- Speed control solenoid circuits problem
35- Radiator fan control relay circuit problem
37- Torque converter clutch solenoid circuit or park/neutral switch failure
41- Generator field not switching properly
42- Fuel pump relay control circuit problem Auto shutdown (ASD) relay control circuit problem No ASD relay output voltage at PCM Fuel level sending unit - volts out of range Fuel level sending unit - no change over miles
43- Multiple/ single cylinder misfire
44- Battery temp sensor volts out of range
46- Charging system voltage too high
47- Charging system voltage too low
51- Fuel system lean
52- Fuel system rich
53- Internal controller failure
54- No cam signal at PCM
55- End of error messages (If you get this only, no errors were found)
62- PCM failure - SRI mile not stored
63- PCM failure - EEPROM write denied
64- Catalytic converter efficiency failure
65- Power Steering switch failure
With a scan tool.
You need to have a diagnostic meter to read the codes, then book to tell you what they mean.
You use an OBD scan tool.
with a scan tool, 97 neons are OBDII so they will talk directly to the scan tool. try a parts house has most will read codes for free
turn your ignition to the on position then off. do this for a total of three times, on the third time leave ignition in on position and look at your odometer. your computer will show up to tell you why your check engine light is on.... then search and find out what the codes are.
if you have the box with the digital miles try turning to key from off to on 3 times and on the 3rd turn keep it on and it should show. if not, refer to the vehicle manual. it should tell you in there.
Either with a scan tool, or by cycling the key on, off, on, off, on and counting the blinks of the check engine light. Two blinks, pause, one blink would be a 21.
Buy the manual in Auto parts store its worth it gives you all the details I think its Haynes or Edmunds, Declan. ----------------------- Or just go to an autoparts store (call first and see if they will do it for free) Here most will scan you car and tell you the codes and their meanings for free.
The slide show view does this job. It can view or display your presentation on whole computer.
There are multiple websites that you may view a list of the ADA procedure codes. Depending on which category of codes you want to view depends on what website you would use.