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 MANUALSCHEVROLET1993BERETTA GT, 2.2 4, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODES - 2.2L
1993 Chevrolet Beretta GT, 2.2 4, Automatic
Engine Controls - Tests W/Codes - 2.2L
1993 Chevrolet Beretta GT, 2.2 4, AutomaticSECTION Engine Controls - Tests W/Codes - 2.2L
- Introduction
- Self-Diagnostic System
- ECM/Pcm Code Charts
- Notes
- Code 13 - Open Oxygen Sensor Circuit
- Code 14 - Coolant Temperature Sensor (Signal Voltage Low)
- Code 15 - Coolant Temperature Sensor (Signal Voltage High)
- Code 21 - Throttle Position Sensor (Signal Voltage High)
- Code 22 - Throttle Position Sensor (Signal Voltage Low)
- Code 23 - Mat Sensor (Signal Voltage High)
- Code 24 - Vehicle Speed Sensor
- Code 25 - Mat Sensor (Signal Voltage Low)
- Code 32 - EGR System Error (1 Of 3)
- Code 32 - EGR System Error - Positive BACKPRESSURE (2 Of 3)
- Code 32 - EGR System Error - Negative BACKPRESSURE (3 Of 3)
- Code 33 - Map Sensor (Signal Voltage High)
- Code 34 - Map Sensor (Signal Voltage Low)
- Code 35 - IAC Idle Speed Error Without Tech 1
- Code 35 - IAC Idle Speed Error Using Tech I
- Code 42 - Est Circuit Open Or Grounded
- Code 44 - Lean Exhaust Indication
- Code 45 - Rich Exhaust Indication
- Code 51 - Faulty Prom/Mem-Cal
- Code 52 - Faulty Cal-PAK
- Code 55 - ECM Error
- Code 66 - A/C Pressure Sensor
- Code 85 - Prom Error & Code 87 - EEPROM Error
- Summary
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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.