1992 Geo Metro XFiFACTORY OEM SERVICE PROCEDURE

Trouble Code Definitions

FAULT CODE IDENTIFICATION

Code Circuit Affected Probable Cause
13 Oxygen Sensor Signal Voltage Does Not Change
14 Coolant Temp. Sensor Low Temp. Indicated
15 Coolant Temp. Sensor High Temp. Indicated
21 Throttle Position Sensor Signal Voltage High
22 Throttle Position Sensor Signal Voltage Low
23 Intake Air Temp. Sensor Low Temp. Indicated
24 Vehicle Speed Sensor No Speedometer
25 Intake Air Temp. Sensor High Temp. Indicated
31 MAP Sensor Low Voltage Input, Low Vacuum
32 MAP Sensor High Voltage Input,High Vacuum
41 Ignition Signal No Signal
42 Crank Angle Sensor No Signal For 3 Seconds
51 EGR System EGR VSV Inoperative
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.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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 Quote

No obligation. See pricing before you book.