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.
1992 Toyota Paseo AutomaticFACTORY OEM SERVICE PROCEDURE
Trouble Code Identification Charts
PASEO CODE IDENTIFICATION
| Code No. | System Affected | Probable Cause | ||||||
|---|---|---|---|---|---|---|---|---|
| 12 & 13 | RPM Signal | Distributor Or Ckt, Starter Ckt, ECU | ||||||
| 14 | Ignition Signal | Ignitor Or Ckt To ECU, ECU | ||||||
| 21 | O2 Sensor Signal | O2 Sensor Or Ckt, ECU | ||||||
| 22 | Coolant Temp. Sensor Signal | Coolant Temp. Sensor Or Ckt, ECU | ||||||
| 24 (1) | IAT Sensor Signal | Intake Air Temp. Sensor Or Ckt, ECU | ||||||
| 25 | Lean Air/Fuel Mixture | Loose Ground, Injector Or Ckt, O2 Sensor Or Ckt, Fuel Pressure, Ignition Sys, Coolant Temp. Sensor, Vacuum Sensor, EGR Sys, ECU | ||||||
| 26 (2) | Rich Air/Fuel Mixture | Loose Ground, Injector Or Ckt, O2 Sensor Or Ckt, Fuel Pressure, Coolant Temp. Sensor, Vacuum Sensor, Compression Pressure, ECU | ||||||
| 31 | Vacuum Sensor | Vacuum Sensor Or Ckt, ECU | ||||||
| 41 (1) | TP Sensor Signal | Throttle Position Sensor Or Ckt, ECU | ||||||
| 42 (3) | VSS Signal | Vehicle Speed Sensor Or Ckt, ECU | ||||||
| 43 (3) | Starter Signal | Starter Signal Ckt, Ignition Switch Or Ckt, Main Relay, ECU | ||||||
| 51 (3) | Switch Condition Signal | A/C Switch Ckt, Neutral/Start Switch Or Ckt, TPS Or Ckt, ECU | ||||||
| 71 (2) | EGR Sys Malfunction | EGR Sys, EGR Temp. Sensor Or Ckt, EGR-VSV, ECU | ||||||
|
||||||||
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.