Hey,How is everybody doing.Im new to the forum and this is my first question-(Cry for help).I pulled the codes on the SIR because I have a infla. restra. light that wont go out.My fasten seat belt light isnt coming on either.I come up with 13,24,and 34...with 12 of course.Ive looked high and low for the code definitions,with no luck.Anybody have any ideas?.....Thanks,Mark

 

1984: ECM Codes
Code #12: Normal System No Codes.
Code #13: Oxygen Sensor Circuit.
Code #14: Coolant Sensor Circuit Low.
Code #15: Coolant Sensor Circuit High.
Code #21: Throttle Position Sensor High.
Code #22: Throttle Position Sensor Low.
Code #24: Vehicle Speed Sensor.
Code #33: Manifold Absolute Pressure Sensor Signal High.
Code #34: Manifold Absolute Pressure Sensor Signal Low.
Code #42: Electronic Spark Timing.
Code #43: Electronic Spark Control.
Code #44: Lean Exhaust Indication.
Code #45: Rich Exhaust Indication.
Code #51: PROM Error.
Code #55: Defective ECM.

1985-1991: ECM Codes
Code #12: Normal No Codes.
Code #13: Open Oxygen Sensor Circuit.
Code #14: Coolant Sensor Circuit Low.
Code #15: Coolant Sensor Circuit High.
Code #21: Throttle Position Sensor High.
Code #22: Throttle Position Sensor Low.
Code #23: Manifold Air Temperature Circuit High.
Code #24: Vehicle Speed Sensor.
Code #25: Manifold Air Temperature Circuit Low.
Code #32: EGR System Failure.
Code #33: Mass Air Flow Sensor High.
Code #34: Mass Air Flow Sensor Low.
Code #36: Mass Air Flow Sensor Burn-Off Function Fault.
Code #41: Cylinder Select Error.
Code #42: Electronic Spark Timing.
Code #43: Electronic Spark Control.
Code #44: Lean Exhaust indication.
Code #45: Rich Exhaust Indication.
Code #46: Vehicle Anti Theft Fault.
Code #51: Faulty Mem-Cal.
Code #52: Fuel Calpak Missing.
Code #52: (1990-91 Corvette Only): Engine Oil Temperature Sensor Low.
Code #53: System Over Voltage.
Code #54: Fuel Pump Circuit Low Voltage.
Code #55: Defective ECM.
Code #62: Engine Oil Temperature Sensor Circuit High.

1992-1993: ECM Codes
Code #12: Normal No Codes.
Code #13: Left Oxygen Sensor Circuit.
Code #14: Coolant Temperature Sensor Circuit High.
Code #15: Coolant Temperature Sensor Circuit Low.
Code #16: Opti-Spark Ignition Timing System.( Low Pulse)
Code #21: Throttle Position Sensor Circuit High.
Code #22: Throttle Position Sensor Circuit Low.
Code #23: Intake Air Temperature Sensor Circuit Low.
Code #24: Vehicle Speed Sensor Circuit.
Code #25: Intake Temperature Sensor Circuit High.
Code #26: Quad-Driver Module #1 Circuit.
Code #27: Quad-Driver Module #2 Circuit.
Code #28: Quad-Driver Module #3 Circuit.
Code #32: Exhaust Gas Recirclation Circuit.
Code #33: Manifold Absolute Pressure Sensor Circuit Low.
Code #34: Manifold Absolute Pressure Sensor Circuit High.
Code #36: Opti-Spark Ignition Timing System. (High Resolution Pulse.)
Code #41: Electronic Spark Timing Circuit Open.
Code #42: Electronic Spark Timing Circuit Grounded.
Code# 43: Electronic Spark Control Circuit.
Code #44: Left Oxygen Sensor Circuit Lean.
Code #45: Left Oxygen Sensor Circuit Rich.
Code #51: Mem-Cal Error.
Code #52: Engine Oil Temperature Sensor Circuit Low.
Code #53: System Voltage.
Code #55: Fuel Lean Monitor.
Code #56: Vacuum Sensor Circuit.
Code #61: Secondary Port Throttle Valve System.
Code #62: Engine Oil Temperature Sensor Circuit High.
Code #63: Right Oxygen Sensor Circuit Open.
Code #64: Right Oxygen Sensor Circuit Lean.
Code #65: Right Oxygen Sensor Circuit Rich.
Code #66: A/C Pressure Sensor Circuit Open.
Code #67: A/C Pressure Sensor Circuit. (Sensor or A/C Clutch Circuit Problem)
Code #68: A/C Relay Circuit Shorted.
Code #69: A/C Clutch Circuit.
Code #72: Gear Selector Switch Circuit.

 

Actually 12 is like quotation marks. What it coded are between the SES ==> flash ... flash flash... your other codes .... flash ... flash flash.

So you will always have a 12 to start and finish. It only means no codes if there are no other coded present.

What year car do you have?

 

Its a 1991....L98...Wow...none of the codes are air bag related...The inflatable restraint light is irritating.Im probably going to have to have a shop put a scan tool on it.I think thats the only way to reset the IR light anyways.

 

Usually this happens on 90 Vettes but a 91 I thought they corrected the problem. Anyway it sounds like the right front frame sensor is bad or has a grounding problem. DISCONNECT THE BATTERY when doing any work on this system. Remove the side gill panel behind the right side wheel. Then you have to remove the washer solvent tank to get to the sensor. You will see a small square sensor sitting on top of the frame near the firewall. Remove it and take a Dremel tool or Drill with a small drum sander on it and clean the paint and rust off the frame where the sensor sits. Also clean the bottom of the sensor really well and put a good coating of Dielectric Grease on the bottom of the sensor and frame and re-install it. I used small star washers on the bolts to dig in and make a better ground. You could do the drivers side too while your at it. RE CONNECT the Battery and clear your codes out. If this don't work you probabally have a bad sensor. You will have to unplug them and check OHM'S on em to find out which one is bad. Pipe

 

Thanks Pipe!!!!..Thats the type of info I was hoping to get!!!Thanks to the others also for the codes,I appreciate it.I let you know how it works out.

 

No prob let us know how ya make out. Maybe I can help some more. Pipe