Change Engine oil light issue
Whumbachumba
03-20-2005, 06:27 PM
My change engine oil light comes on every morning. We have recently changed the oil. I drive the car to and from school which is only about a mile away each day. Also, they gas seems to be used up quite quickly. Is this a normal problem for a 93 car or is there a problem? How do I get my change oil light off also, I have tried to use the reset button, but that didn't work. I also tried to see if discontecting the battery did anything, but no luck. Please help me. Thanks alot.
Olds98
03-20-2005, 06:35 PM
If the car has the driver information system, try pressing and holding the "oil" and the "reset" buttons together. If the car doesn't have a DIS, many GMs can be reset by turning the ignition to on (engine not running), hitting the gas pedal to the floor three times in rapid succession, and the shutting off the ignition. The light should disappear upon startup.
Whumbachumba
03-20-2005, 07:47 PM
DIS is the full digital information found on the Regency Elite right? I will try these methods and hope that work. Thanks for the info and I'll get back to you if they do.
Hansnet
03-20-2005, 07:55 PM
right now go out and pull the codes RIGHT NOW. you have a 93 so it was the last easy year to tell what you are throwing.
Hansnet
03-20-2005, 07:58 PM
If the car has the driver information system, try pressing and holding the "oil" and the "reset" buttons together. If the car doesn't have a DIS, many GMs can be reset by turning the ignition to on (engine not running), hitting the gas pedal to the floor three times in rapid succession, and the shutting off the ignition. The light should disappear upon startup.
actually that does not apply to this car. none of it. the DIC reset method you are refering to....may apply on his but probably does not. never worked with olds before with that option but have read and know a little about pontiacs/buick stuff.
If it is the like the ssei dic's you just reset the pcm
NEVER EVER MUST YOU TAP THE PEDDLE TO THE FLOOR LIKE THAT FOR ANY PURPOSE ON THESE CARS.
actually that does not apply to this car. none of it. the DIC reset method you are refering to....may apply on his but probably does not. never worked with olds before with that option but have read and know a little about pontiacs/buick stuff.
If it is the like the ssei dic's you just reset the pcm
NEVER EVER MUST YOU TAP THE PEDDLE TO THE FLOOR LIKE THAT FOR ANY PURPOSE ON THESE CARS.
Whumbachumba
03-20-2005, 08:27 PM
DIS is the full digital information found on the Regency Elite right? I will try these methods and hope that work. Thanks for the info and I'll get back to you if they do.
The codes? I haven't done anything yet. And I would like to know if olds tend to get very gas guzzly sometimes or if I have a problem.
The codes? I haven't done anything yet. And I would like to know if olds tend to get very gas guzzly sometimes or if I have a problem.
Hansnet
03-20-2005, 08:43 PM
your car should get 20mpg city easy and 29mpg-31mpg highway stock.
I assume you are running non supercharged L27.
Pull the codes and see what is up.
they may or may not be stored since it is a 93 and they got a little bad iwth OBD1 in the 90's and worse off in 94/95 then 96 finally improved.
anyway worth a shot:
Thi is for: 1987 - 1993!
Find the "Assembly Line Communication Link (ALCL)" it usually found under the dash near the steering column. Now locate terminals "A" & "B", the 2 uppermost right-hand terminals, "A" is the one the right. You must use a short wire to ground out these terminals, or a hairclip, paperclip, or something similar. Short the terminals with the ignition off, then turn the ignition to "on" but do not start the car. The ECM will display "Code 12" by flashing the "Service Engine Soon" light indicating the system is working. Code 12 is simply one flash, followed by a brief pause, then two flashes in quick succession. This code will flash three times. If no codes are stored code 12 will continue to flash until the ground is removed from the terminal.
After flashing three times, the ECM will display any stored trouble codes. Each code will be flashed three times then code 12 will be flashed again indicating display is completed.
Note: If the trouble is intermittent the engine light will come for about ten seconds then go out. If the trouble is more serious then the engine light will stay on and the trouble codes stored in the ECM memory until voltage is interrupted to the ECM. To clear the codes, disconnect the battery for about ten minutes.
Note: If you or anyone else has disassembled the lower footwell shield (with the diagnostic connector and courtesy light in it) it is possible the connector was reinstalled upside down. In this case, the uppermost right 2 terminals are no longer A nd B! No damage will be incurred if you short these two in this instance, but you will get no codes. If this happens, try the bottom 2 terminals on the left side!
CODES:
code 12: Diagnostic
code 13: Oxygen sensor(open or shorted circuit)
code 14: Coolant sensor circuit (high temp)
code 15: Coolant sensor circuit (low temp)
code 16: System voltage high or low
code 17: Spark reference circuit
code 18: Cam/Crank error
code 21: Throttle position(TPS)voltage high
code 22: Throttle position(TPS)voltage low
code 23: Intake air temperature(IAT)sensor low temp indicated
code 24: Vehicle speed sensor circuit
code 25: Intake air temperature(IAT)sensor high temp indicated
code 26: Quad driver module "A" Circuit
code 27: Gear switch diagnosis
code 28: Same as code 27
code 29: Same as code 27
code 31: Park/Neutral switch
code 32: EGR system
code 33: MAF sensor-voltage too high
code 34: MAF sensor-voltage too low
code 36: Transaxle shift problem
code 38: Brake input circuit
code 39: Torque converter clutch(TCC)problem
code 41: Cam sensor circuit loss of signal
code 42: Electronic spark control circuit
code 43: Electronic spark control circiut or Knock sensor problem
code 44: O2 sensor-Lean exhaust indicated
code 45: O2 sensor-Rich exhaust indicated
code 46: Power steering pressure switch
code 48: Misfire diagnosis
code 51: Prom or MEM-CAL error
code 52: CAL-PAK faulty,missing or installed wrong
code 55: ECM
code 56: Boost control solenoid
code 63: EGR flow check
code 64: Same as code 63
code 65: same as code 63
I assume you are running non supercharged L27.
Pull the codes and see what is up.
they may or may not be stored since it is a 93 and they got a little bad iwth OBD1 in the 90's and worse off in 94/95 then 96 finally improved.
anyway worth a shot:
Thi is for: 1987 - 1993!
Find the "Assembly Line Communication Link (ALCL)" it usually found under the dash near the steering column. Now locate terminals "A" & "B", the 2 uppermost right-hand terminals, "A" is the one the right. You must use a short wire to ground out these terminals, or a hairclip, paperclip, or something similar. Short the terminals with the ignition off, then turn the ignition to "on" but do not start the car. The ECM will display "Code 12" by flashing the "Service Engine Soon" light indicating the system is working. Code 12 is simply one flash, followed by a brief pause, then two flashes in quick succession. This code will flash three times. If no codes are stored code 12 will continue to flash until the ground is removed from the terminal.
After flashing three times, the ECM will display any stored trouble codes. Each code will be flashed three times then code 12 will be flashed again indicating display is completed.
Note: If the trouble is intermittent the engine light will come for about ten seconds then go out. If the trouble is more serious then the engine light will stay on and the trouble codes stored in the ECM memory until voltage is interrupted to the ECM. To clear the codes, disconnect the battery for about ten minutes.
Note: If you or anyone else has disassembled the lower footwell shield (with the diagnostic connector and courtesy light in it) it is possible the connector was reinstalled upside down. In this case, the uppermost right 2 terminals are no longer A nd B! No damage will be incurred if you short these two in this instance, but you will get no codes. If this happens, try the bottom 2 terminals on the left side!
CODES:
code 12: Diagnostic
code 13: Oxygen sensor(open or shorted circuit)
code 14: Coolant sensor circuit (high temp)
code 15: Coolant sensor circuit (low temp)
code 16: System voltage high or low
code 17: Spark reference circuit
code 18: Cam/Crank error
code 21: Throttle position(TPS)voltage high
code 22: Throttle position(TPS)voltage low
code 23: Intake air temperature(IAT)sensor low temp indicated
code 24: Vehicle speed sensor circuit
code 25: Intake air temperature(IAT)sensor high temp indicated
code 26: Quad driver module "A" Circuit
code 27: Gear switch diagnosis
code 28: Same as code 27
code 29: Same as code 27
code 31: Park/Neutral switch
code 32: EGR system
code 33: MAF sensor-voltage too high
code 34: MAF sensor-voltage too low
code 36: Transaxle shift problem
code 38: Brake input circuit
code 39: Torque converter clutch(TCC)problem
code 41: Cam sensor circuit loss of signal
code 42: Electronic spark control circuit
code 43: Electronic spark control circiut or Knock sensor problem
code 44: O2 sensor-Lean exhaust indicated
code 45: O2 sensor-Rich exhaust indicated
code 46: Power steering pressure switch
code 48: Misfire diagnosis
code 51: Prom or MEM-CAL error
code 52: CAL-PAK faulty,missing or installed wrong
code 55: ECM
code 56: Boost control solenoid
code 63: EGR flow check
code 64: Same as code 63
code 65: same as code 63
Automotive Network, Inc., Copyright ©2025