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.
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HOMESERVICE MANUALSSAAB1995900 S, 2D HATCHBACK, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 8 (ENGINE CONTROLS - SELF-DIAGNOSTICS - TRIONIC FUEL CONTROL SYSTEM)
1995 Saab 900 S, 2D Hatchback, Automatic
Section 8 (Engine Controls - Self-Diagnostics - TRIONIC Fuel Control System)
1995 Saab 900 S, 2D Hatchback, AutomaticSECTION Section 8 (Engine Controls - Self-Diagnostics - TRIONIC Fuel Control System)
WARNING: This page is about a different car, the 1996 Saab 900. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Self-Diagnostic System
- Testing & Repair Procedure
- Summary
- Circuit Tests
- Notes
- DTC P0105, P0106, P0107 &/Or P0108 - Manifold Absolute Pressure (Map) Sensor Circuit
- DTC P0110, P0112 &/Or P0113 - Intake Air Temperature (IAT) Sensor Circuit
- DTC P0115, P0117 &/Or P0118 - Engine Coolant Temperature (ECT) Sensor Circuit
- DTC P0120, P0121, P0122 &/Or P0123 - Throttle Position (TP) Sensor Circuit
- DTC P0125 - Coolant Temperature Slow Increase
- DTC P0130, P0131 &/Or P0132 - Heated Oxygen Sensor (Ho2S) Circuit
- DTC P0135 &/Or P0141 - Ho2S PREHEATER Malfunction
- DTC P0136, P0138 &/Or P0140 - Faulty Rear Ho2S
- DTC P0170, P0171 &/Or P0172 - Fuel Mixture Adaptation Malfunction
- DTC P0300 - Random Misfire
- DTC P0301, P0302, P0303, P0304 - Misfire In Cylinder No. 1, 2, 3 Or 4
- DTC P0327 - Knock Sensor (KS) Malfunction
- DTC P0335 - Crankshaft Position Sensor
- DTC P0340 - Camshaft Position Sensor
- DTC P0420 - Catalytic Converter
- DTC P0441 - EVAP Canister Purge Valve Low Flow
- DTC P0442 & P0455 - Purging System Leak
- DTC P0443, P0444 &/Or P0445 - EVAP Canister Purge Valve Malfunction
- DTC P0452 &/Or P0453 - Fuel Tank Pressure Sensor
- DTC P0500, P0501 &/Or P0502 - Vehicle Speed Sensor (VSS) Malfunction
- DTC P0505, P0506 &/Or P0507 - Idle Air Control (IAC) Valve Malfunction
- DTC P0605 - Electronic Control Module (ECM) Malfunction
- DTC P1170, P1171 &/Or P1172 - Closed Loop
- DTC P1416 - Fuel Level Low
- DTC P1549 - Boost Pressure Control Valve (APC Valve)
- DTC P1576, P1577 - Brake Light Switch
- DTC P1611 - Check Engine Light
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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.