1995 Suzuki SamuraiFACTORY OEM SERVICE PROCEDURE

Trouble Code Definition

TROUBLE CODE IDENTIFICATION

Code  System Affected  Probable Cause 
12 System Normal System Normal
13  Oxygen Sensor Sensor or Circuit, ECM
14  (1) Engine Coolant Temp. (ECT) Sensor Sensor Or Circuit, ECM
15  (2) Engine Coolant Temp. (ECT) Sensor Sensor Or Circuit, ECM
21  (3) Throttle Position (TP) Sensor Sensor Or Circuit, ECM
22  (4) Throttle Position (TP) Sensor Sensor Or Circuit, ECM
23  (1) Intake Air Temp. (IAT) Sensor Sensor Or Circuit, ECM
24  Vehicle Speed Sensor Sensor Or Circuit, ECM
25  (2) Intake Air Temp. (IAT) Sensor Sensor Or Circuit, ECM
31  (3) MAP Sensor Sensor Or Circuit, ECM
32  (4) MAP Sensor Sensor Or Circuit, ECM
41  (5) Ignition Signal Circuit Ign. Coil, Ignitor, Wiring Circuit, ECM
42  Crank Angle Sensor Sensor, Wiring, ECM
44  (6) Idle Switch Circuit Open TP Sensor, Wiring, ECM
45  (6) Idle Switch Circuit Shorted TP Sensor, Wiring, ECM
51  (1) EGR System EGR, Wiring, ECM, Vacuum Switching Valve
53 (7) (6) ECM Ground Circuit Open Wiring, ECM
54 (8) (6) Gear Position (5th Gear Switch) 5th Gear Switch, Wiring, ECM
71 (8) Test Switch Circuit Wiring, ECM
(1) Low temperature is indicated.
(2) High temperature is indicated.
(3) High voltage is indicated.
(4) Low voltage is indicated.
(5) Code 41 is not stored in ECM memory. To check code when engine fails to start, crank engine, and then, with ignition still on, install fuse in diagnostic terminal of fuse block.
(6) When code occurs, ECM will not activate MIL while engine is running. When problem is fixed, memory of defective area will be erased from ECM.
(7) California emission models only.
(8) Federal emission models only.
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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.

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