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.
Trouble Code Definitions (All Except 9000 Series Turbo)
1993 Saab 9000 CD, 2.3 M, StandardSECTION Trouble Code Definitions (All Except 9000 Series Turbo)
DIAGNOSTIC CODE - LH MFI
| Permanent Fault | Intermittent Fault | Malfunction Indicated | ||
|---|---|---|---|---|
| 42241 | 22241 | Voltage Higher Than 16 Volts | ||
| 42251 | 22251 | Less Than One Volt At ECM Pin No. 4 | ||
| 42252 | 22252 | Signal Voltage Less Than 10 Volts | ||
| 42291 | 22291 | Battery Voltage Less Than 10 Volts Or Higher Than 16 Volts | ||
| 42440 | 22440 | Rich Mixture: No Control By O2 Sensor | ||
| 42441 | 22441 | Rich Idle Mixture | ||
| 42442 | 22442 | Rich Mixture | ||
| 42450 | 24250 | Lean Mixture: No Control By O2 Sensor | ||
| 42451 | 22451 | Lean Idle Mixture | ||
| 42452 | 22452 | Lean Mixture | ||
| 42460 (1) | 22460 (1) | O2 Sensor Signal Faulty | ||
| 42491 | 22491 | Incorrect Idle Mixture | ||
| 42492 | 22492 | Incorrect Mixture | ||
| 44221 | 24221 | Vehicle Speed Sensor Signal Absent | ||
| 44261 | 24621 | Vehicle Speed Sensor Signal Faulty | ||
| 44360 | 24360 | Crankshaft Sensor Signal Faulty | ||
| 44460 (1) | 24460 | Load Signal Faulty | ||
| 44461 | 24461 | ECM Programming Fault: Outside Limits | ||
| 44660 | 24660 | Pre-Ignition Fault | ||
| 44661 | 24661 | Knock Sensor Signal Faulty | ||
| 44671 | 24671 | Pre-Ig. Signal Longer Than 20 Seconds | ||
| 44662 | 24462 | Pre-Ign. Synchronization Signal Faulty | ||
| 45260 | 25260 | Throttle Potentiometer Signal Faulty | ||
| 45360 | 25360 | Brake Signal Faulty | ||
| 45641 (1) | 25641 (1) | Mass Airflow Meter Signal High | ||
| 45651 (1) | 25651 (1) | Mass Airflow Meter Signal Low | ||
| 45691 (1) | 25691 (1) | Mass Airflow Meter Signal Faulty | ||
| 45723 | 25723 | Transmission Range Signal/Function Faulty | ||
| 45771 (1) | 25771 | Throttle Position Sensor Signal Shorted | ||
| 45772 (1) | 25772 | TP Sensor Signal Indicates Idle And Full Throttle Simultaneously | ||
| 46221 (1) | 26221 | Temperature Sensor Circuit Open | ||
| 46261 | 26261 | Temperature Sensor Signal Indicates Constant Temperature | ||
| 46271 | 26271 | Temperature Sensor Circuit Shorted | ||
| 46391 | 26391 | EGR System Function Faulty | ||
| 58121 | 38121 | MAF Meter Burn-Off Function Absent | ||
| 58321 | 38321 | AIC Valve Function Faulty | ||
| 58322 (1) | 38322 | Canister Purge Valve Function Faulty | ||
| 58371 (1) | 38371 | Injector Faulty | ||
| 58372 (1) | 38372 | Canister Purge Valve Ckt Open Or Shorted To Ground | ||
| 53882 (1) | 38382 | Canister Purge Valve CKt Shorted To Battery Voltage | ||
| 60000 | - | Internal Monitoring | ||
| 60001 | - | ECM Fault | ||
| 60002 | - | ECM Fault | ||
| 67192 (1) | - | ECM Fault | ||
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RENDER: 1.0x
NO RELATED
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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.