How do you count OBD1 codes?
How to Read OBD1 Codes at Home. Our reading method without a diagnostic tool is to make short the circuit of pin A and pin B. The car will then enter the diagnostic mode and flash the “check engine Light” several times, and we should count the flashes to figure out the diagnostic codes.
When to set code 32 on GM OBD?
The ECM monitors the Baro Sensor circuit. Code 32 can set when the circuit is open or shorted. 32 – Barometric Pressure Sensor Circuit fault. If the ECM monitors EGR operation. Code 32 can be set if the EGR system is not performing up to factory specifications.
Where can I find the GM OBD1 code?
GM OBD1 Codes 13 O2 sensor or circuit 14 coolant sensor/high temp 15 coolant temp/low temp 16 system voltage high (3.8L) DIS circuit 17 crank signal circuit ECM fault crank pos
How to count the flashes of an OBD1 code?
Count the flashes. There will be a longer pause between the codes if you have several trouble codes and a shorter pause between the digits of the trouble codes. For example, code 16 = 1 flash * Pause * 6 flashes. When all trouble codes are outputted, it will flash the code 12 – 1 flash * Pause * 2 flashes.
Can a low voltage cause an OBD1 code?
Low voltage can cause a lot of trouble with the troubleshooting and many error codes that we do not want. Put a jumper wire between PIN A and PIN B. Let the jumper wire sit there and turn the ignition to ON. Do not start the engine. The check engine light will begin to flash. Count the flashes.
The ECM monitors the Baro Sensor circuit. Code 32 can set when the circuit is open or shorted. 32 – Barometric Pressure Sensor Circuit fault. If the ECM monitors EGR operation. Code 32 can be set if the EGR system is not performing up to factory specifications.
What are the trouble codes for GM OBD1?
GM Trouble Codes for OBD1 Computer Operating System. 12 – System normal. 13 – Oxygen sensor circuit open. 14 – Coolant sensor high resistance or shorted. 15 – Coolant sensor circuit low or open
What does the OBD code 22 stand for?
GM OBD Trouble Code 22 Throttle Position Sensor Error (Signal Low) The Throttle Position sensor signals the Engine Control Module as to the current position of the engine throttle valve. The current throttle valve opening is based on the driver’s input from the gas pedal.
Count the flashes. There will be a longer pause between the codes if you have several trouble codes and a shorter pause between the digits of the trouble codes. For example, code 16 = 1 flash * Pause * 6 flashes. When all trouble codes are outputted, it will flash the code 12 – 1 flash * Pause * 2 flashes.