TBS from neons.org
TSB from Neons.org
DIAGNOSTIC CODES
1. Cycle the ignition key ON-OFF-ON-OFF-ON within 5 seconds. To cycle the ignition key ON means to turn it only as far as it takes to get the radio to come on. It does not mean to turn the engine on.
2. Count the number of times the "check engine" lamp on the instrument panel flashes on and off. The number of flashes represents the code. There is a slight pause between the flashes representing the first and second digits of the code. Longer pauses separate individual codes. For example, flash-flash-flash [pause] flash-flash represents the code 32.
A code of "55" represents end of error codes. If this is all you get then no error codes are stored in the computer. This is the normal condition for a neon.
| CODE |
Description of Trouble Code |
| 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 MAP from start to run |
| 14 |
MAP sensor voltage too low |
| 15 |
No vehicle speed sensor signal |
| 17 |
Closed loop temp not reached or engine cold too long |
| 21 |
02s sensor problem (oxygen sensor), upstream or down stream |
| 22 |
Engine coolant temp sensor out of range |
| 23 |
Intake air temp sensor out of range |
| 24 |
Throttle Position sensor out of range |
| 25 |
Idle air control motor circuits, target idle not reached (+/- 200),vacuum leak found |
| 27 |
Injector control circuit |
| 31 |
Evap purge flow monitor failure or evap solenoid circuit |
| 32 |
EGR system failure |
| 33 |
A/C clutch relay circuit |
| 34 |
Speed control Solenoid circuits |
| 35 |
Rad Fan control relay circuit |
| 37 |
Torque converter clutch solenoid CKT or park/neutral switch failure |
| 41 |
Generator field not switching properly |
| 42 |
Fuel pump relay control ckt, Auto shutdown relay control ckt, No ASD relay output
voltage at PCM, Fuel level sending unit volts out of range, Fuel level unit No change over
miles |
| 43 |
Multiple/ single cylinder misfire |
| 44 |
Battery temp sensor volts out of range |
| 46 |
Charging system voltage too low |
| 51 |
Fuel system lean |
| 52 |
Fuel system rich |
| 53 |
Internal control 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 |
