1997 Cadillac CateraFACTORY OEM SERVICE PROCEDURE

Anti-Lock Brake System DTCS

ANTI-LOCK BRAKE SYSTEM DTCS

OEM Code Description
16 LEFT FRONT SOLENOID CIRCUIT MALFUNCTION
17 RIGHT FRONT SOLENOID CIRCUIT MALFUNCTION
18 REAR SOLENOID CIRCUIT MALFUNCTION
19 VALVE RELAY CIRCUIT MALFUNCTION
25 WHEEL SPEED SENSOR CIRCUIT FREQUENCY MALFUNCTION
31 RPM SIGNAL CIRCUIT MALFUNCTION
35 RETURN PUMP RELAY CIRCUIT MALFUNCTION
37 BRAKELIGHT SWITCH CIRCUIT MALFUNCTION
39 LEFT FRONT WHEEL SPEED SENSOR CIRCUIT MALFUNCTION
41 LEFT FRONT WHEEL SPEED SENSOR CIRCUIT OPEN OR SHORTED
42 RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT MALFUNCTION
43 RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT OPEN OR SHORTED
44 LEFT REAR WHEEL SPEED SENSOR CIRCUIT MALFUNCTION
45 LEFT REAR WHEEL SPEED SENSOR CIRCUIT OPEN OR SHORTED
46 RIGHT REAR WHEEL SPEED SENSOR CIRCUIT MALFUNCTION
47 RIGHT REAR WHEEL SPEED SENSOR CIRCUIT OPEN OR SHORTED
48 SYSTEM VOLTAGE OUT OF RANGE
55 EBTCM INTERNAL MALFUNCTION
65 VARIANT CODING TRACTION CONTROL MALFUNCTION
66 DELIVERED ENGINE TORQUE CIRCUIT MALFUNCTION
67 REQUESTED ENGINE TORQUE CIRCUIT MALFUNCTION
71 DELIVERED TRANSMISSION TORQUE CIRCUIT MALFUNCTION
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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.