LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 1991 >> Land Cruiser >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 6-CYL >> Code Identification
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Code Identification

CODE IDENTIFICATION

Code No. System Affected Probable Cause
12 & 13  RPM Signal Distributor Or Circuit, Starter Circuit, ECU
14  Ignition Signal Ignitor And Ignition Coil Or Circuit To ECU, ECU
21  (1) Oxygen Sensor Signal Oxygen Sensor Or Circuit, Oxygen Sensor Heater, ECU
22  Coolant Temp. Sensor Signal Coolant Temp. Sensor Or Circuit, ECU
24  Intake Air Temp. Sensor Signal Intake Air Temp. Sensor Or Circuit, ECU
25  Lean Air/Fuel Mixture ECU, Injector Or Circuit, Oxygen Sensor Or Circuit, Fuel Pressure, Coolant Temp. Sensor, Airflow Meter
26  Rich Air/Fuel Mixture Fuel Pressure, Airflow Meter, ECU, Injector Or Circuit, Oxygen Sensor Or Circuit, Cold Start Injector Or Circuit, Coolant Temp. Sensor
28  (2) Oxygen Sensor Signal Oxygen Sensor Or Circuit, Oxygen Sensor Heater, ECU
31 & 32  Airflow Meter Signal Airflow Meter Or Circuit, ECU
35  High Altitude Compensator Signal ECU
41  Throttle Position Sensor Signal Throttle Position Sensor Or Circuit, ECU
42  Vehicle Speed Sensor Signal Vehicle Speed Sensor Or Circuit, ECU
43  Starter Signal Starter Signal Circuit, Ignition Switch Or Circuit, ECU
51  Switch Condition Signal A/C Switch Circuit, ECU, Neutral/Start Switch Or Circuit, TPS Or Circuit
71 (3) EGR System Malfunction EGR System, EGR Temp. Sensor Or Circuit, ECU, EGR VSV
(1) This is the No. 1 oxygen sensor.
(2) This is the No. 2 oxygen sensor.
(3) Used on Calif. only.
scientia non olet · About LEMON Manuals