Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1995 Pontiac Firebird Formula, 2D Convertible, AutomaticFACTORY OEM SERVICE PROCEDURE
Anti-Lock System DTCS
ANTI-LOCK SYSTEM DTCS
| OEM Code | Description |
|---|---|
| 11 | ABS WARNING LIGHT CIRCUIT MALFUNCTION |
| 14 | ABS ENABLE RELAY CONTACT CIRCUIT OPEN |
| 15 | ABS ENABLE RELAY CONTACTS SHORTED TO BATTERY OR ALWAYS CLOSED |
| 16 | ABS ENABLE RELAY COIL CIRCUIT OPEN |
| 17 | ABS ENABLE RELAY COIL CIRCUIT SHORTED TO GROUND |
| 18 | ABS ENABLE RELAY COIL CIRCUIT SHORTED TO BATTERY VOLTAGE |
| 21 | FRONT WHEEL SPEED IS ZERO |
| 22 | FRONT WHEEL SPEED IS ZERO |
| 23 | REAR WHEEL SPEED IS ZERO |
| 24 | REAR WHEEL SPEED IS ZERO |
| 25 | EXCESSIVE WHEEL SPEED VARIATION |
| 26 | EXCESSIVE WHEEL SPEED VARIATION |
| 27 | EXCESSIVE WHEEL SPEED VARIATION |
| 28 | EXCESSIVE WHEEL SPEED VARIATION |
| 32 | WHEEL SPEED SENSOR CIRCUIT OPEN OR SHORTED TO BATTERY OR GROUND |
| 33 | WHEEL SPEED SENSOR CIRCUIT OPEN OR SHORTED TO BATTERY OR GROUND |
| 34 | WHEEL SPEED SENSOR CIRCUIT OPEN OR SHORTED TO BATTERY OR GROUND |
| 35 | WHEEL SPEED SENSOR CIRCUIT OPEN OR SHORTED TO BATTERY OR GROUND |
| 36 | LOW SYSTEM VOLTAGE |
| 37 | HIGH SYSTEM VOLTAGE |
| 38 | EMB/ESB WILL NOT HOLD MOTOR |
| 41 | EMB/ESB WILL NOT HOLD MOTOR |
| 42 | EMB/ESB WILL NOT HOLD MOTOR |
| 44 | CHANNEL (MOTOR) WILL NOT MOVE |
| 45 | CHANNEL (MOTOR) WILL NOT MOVE |
| 46 | CHANNEL (MOTOR) WILL NOT MOVE |
| 47 | ABS MOTOR FREE SPINS |
| 48 | ABS MOTOR FREE SPINS |
| 51 | ABS MOTOR FREE SPINS |
| 52 | LEFT/RIGHT FRONT CHANNEL (MOTOR) RELEASED TOO LONG |
| 53 | LEFT/RIGHT FRONT CHANNEL (MOTOR) RELEASED TOO LONG |
| 54 | REAR CHANNEL RELEASE TOO LONG |
| 55 | EBCM/EBTCM MALFUNCTION |
| 56 | ABS MOTOR CIRCUIT OPEN |
| 57 | ABS MOTOR CIRCUIT SHORTED TO GROUND |
| 58 | ABS MOTOR CIRCUIT SHORTED TO BATTERY OR MOTOR SHORTED |
| 61 | ABS MOTOR CIRCUIT OPEN |
| 62 | ABS MOTOR CIRCUIT SHORTED TO GROUND |
| 63 | ABS MOTOR CIRCUIT SHORTED TO BATTERY OR MOTOR SHORTED |
| 64 | ABS MOTOR CIRCUIT OPEN |
| 65 | ABS MOTOR CIRCUIT SHORTED TO GROUND |
| 66 | ABS MOTOR CIRCUIT SHORTED TO BATTERY OR MOTOR SHORTED |
| 75 | (WITH TCS) PCM-TO-EBTCM SERIAL DATA MALFUNCTION |
| 76 | FRONT SOLENOID CIRCUIT OPEN OR SHORTED TO BATTERY |
| 77 | FRONT SOLENOID CIRCUIT SHORTED TO GROUND |
| 78 | FRONT SOLENOID CIRCUIT OPEN OR SHORTED TO BATTERY |
| 81 | FRONT SOLENOID CIRCUIT SHORTED TO GROUND |
| 82 | CALIBRATION MALFUNCTION |
| 86 | EBCM TURNED ON RED BRAKE WARNING LIGHT |
| 87 | RED BRAKE WARNING LIGHT CIRCUIT OPEN |
| 88 | RED BRAKE WARNING LIGHT CIRCUIT SHORTED TO BATTERY |
| 91 | OPEN BRAKE SWITCH CONTACTS DURING DECELERATION OR WHEN ABS IS REQUIRED |
| 92 | OPEN BRAKE SWITCH CONTACTS DURING DECELERATION OR WHEN ABS IS REQUIRED |
| 93 | CODE 91 OR 92 SET IN CURRENT OR LAST IGNITION CYCLE |
| 94 | BRAKE SWITCH CONTACTS ALWAYS CLOSED |
| 95 | BRAKE SWITCH CIRCUIT OPEN |
| 96 | BRAKELIGHT CIRCUIT OPEN |
| 111 | TCS WARNING OR SWITCH LIGHT CIRCUIT MALFUNCTION |
| 114 | TCS ENABLE RELAY CONTACT CIRCUIT OPEN |
| 116 | TCS ENABLE RELAY COIL CIRCUIT OPEN |
| 118 | TCS ENABLE RELAY COIL CIRCUIT SHORTED TO BATTERY |
| 123 | PCM-TO-EBTCM DELIVERED TORQUE CIRCUIT MALFUNCTION |
| 136 | TCS LOW SYSTEM VOLTAGE |
| 144 | REAR TCS CHANNEL WILL NOT MOVE |
| 145 | REAR TCS CHANNEL WILL NOT MOVE |
| 146 | ADJUSTER ASSEMBLY WILL NOT MOVE |
| 147 | REAR TCS MOTOR FREE SPINS |
| 148 | REAR TCS MOTOR FREE SPINS |
| 154 | ADJUSTER ASSEMBLY MALFUNCTION |
| 155 | EBTCM MALFUNCTION |
| 156 | TCS MOTOR CIRCUIT OPEN |
| 157 | TCS MOTOR CIRCUIT SHORTED TO GROUND |
| 158 | TCS MOTOR CIRCUIT SHORTED TO BATTERY |
| 161 | TCS MOTOR CIRCUIT OPEN |
| 162 | TCS MOTOR CIRCUIT SHORTED TO GROUND |
| 163 | TCS MOTOR CIRCUIT SHORTED TO BATTERY |
| 164 | ADJUSTER ASSEMBLY MOTOR CIRCUIT OPEN |
| 165 | ADJUSTER ASSEMBLY MOTOR CIRCUIT SHORTED TO GROUND |
| 166 | ADJUSTER ASSEMBLY MOTOR CIRCUIT SHORTED TO BATTERY |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.