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 MANUALSPLYMOUTH1990GRAND VOYAGER L4-153 2.5L SOHC TURBOREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )
1990 Plymouth Grand Voyager L4-153 2.5L SOHC Turbo
A L L Diagnostic Trouble Codes ( DTC )
1990 Plymouth Grand Voyager L4-153 2.5L SOHC TurboSECTION A L L Diagnostic Trouble Codes ( DTC )
Testing and Inspection- Diagnostic Trouble Code Descriptions
- Manufacturer Code Charts
- Code to Test Chart
- Driveability (DR) Tests
- DR-1A CODE to DR TEST Chart (Checking for Fault Codes)
- DR-2 "MAP Pneumatic Signal"
- DR-3 "MAP Pneumatic Change"
- DR-4 "MAP Voltage Too Low"
- DR-5 "MAP Voltage Too High"
- DR-6 "No Vehicle Speed Signal"
- DR-7 "Oxygen Sensor Signal"
- DR-8 "Oxygen Sensor Shorted High"
- DR-9 "Coolant Voltage Low"
- DR-10 "Coolant Voltage High"
- DR-11 "Charge Temp Volt Low"
- DR-12 "Charge Temp Volt Hi"
- DR-13 "TPS Voltage Low"
- DR-14 "TPS Voltage High"
- DR-15 "AIS Motor Circuits"
- DR-16 "Inj 1 Control CKT"
- DR-17 "Inj 2 Control CKT"
- DR-18 "Inj 3 Control CKT"
- DR-19 "Inj 4 Control CKT"
- DR-20 "Purge Solenoid CKT"
- DR-21 "EGR Solenoid Circuit" (California)
- DR-22 "EGR System Failure" (California)
- DR-23 "A/C Clutch Relay CKT"
- DR-24 "Radiator Fan Relay"
- DR-25 "Z1 Voltage Sense"
- DR-28 "VNT Solenoid #3 CKT"
- DR-28 "Wastegate Solenoid"
- DR-30 "Boost Limit Exceeded"
- DR-32 "BARO Read Solenoid"
- DR-33 "EEPROM Write Denied"
- DR-33 "EMR Miles Not Stored"
- DR-34 Checking Coolant & Throttle Position Sensors
- DR-34 Checking Idle Motor Circuits
- DR-34 Checking Knock Sensor Output
- DR-34 Checking MAP Sensor
- DR-34 Checking Park/Neutral Switch Input
- DR-34 Checking SBEC Ground & Power Circuits
- DR-35 Checking Secondary Coil Output & Timing
- DR-36 Checking Fuel Pressure
- DR-37 Checking Fuel Mixture
- DR-38 Repairing "Lean F/A Condition" Fault
- DR-39 Checking Oxygen Sensor Heater
- DR-40 Checking Minimum Air Flow Speed
- DR-41 Other Problems Related to Driveability
- DR-42 Intermittent Test For Relays & Solenoids
- DR-43 Intermittent Test For MAP Pneumatic Change
- DR-44 Intermittent Test For Voltage Sensors
- DR-45 Intermittent Test For Idle Motor Circuits
- DR-46 Intermittent Test For Injector Faults
- Airbag System
- 1 System Function
- 2 No Response Message on DRBII
- 3 Fault Messages
- 4 Safing Sensor Short
- 5 Front Sensors Open
- 6 Squib Open
- 7 Squib Short
- 8 Safing Sensor Short
- 9 Front Sensor Short
- 10 Front Sensor Open
- 11 Low Stored Energy
- 12 Ignition Run Low
- 13 Warning Lamp Short
- 14 Warning Lamp Open
- 15 Ignition Run/Start Low
- 16 Diagnostic Module
- 17 System Check
- Antilock Brakes / Traction Control Systems
- Test 1B - Fault (Trouble) Code Messages
- Test 2A - CAB Fault Test
- Test 3 - Modulator Fault
- Test 4 - Solenoid Undervoltage
- Test 5 - Low Fluid/Parking Brake Fault
- Test 6 - System Relay Fault
- Test 7 - Low Accumulator Fault
- Test 8 - Boost Pressure Fault
- Test 9 - Right Rear Wheel Speed Sensor Continuity Fault
- Test 10 - Left Rear Wheel Speed Sensor Continuity Fault
- Test 11 - Right Front Wheel Speed Sensor Continuity Fault
- Test 12A - Left Front Wheel Speed Sensor
- Test 13A - Right Rear Wheel Speed Sensor
- Test 14A - Left Rear Wheel Speed Sensor
- Test 15A - Right Front Wheel Speed Sensor
- Test 16A - Left Front Wheel Speed Sensor Fault
- Test 17 - Primary Pressure/Delta Pressure Fault
- Test 18 - Antilock Lamp Fault
- Test 19 - Antilock Lamp Relay Fault
- Test 20A - Excess Decay Fault
- Test 21 - Hydraulic Pump/Motor Circuit Test
- Test 22 - Hydraulic Pressure Performance Test
- Test 23A - Stop Lamp Switch Input Test
- Charging System (CH) Tests
- Speed Control (SP) Tests
- SP-1 Checking DRBII Operation and Reading Faults
- SP-2 Repairing Fault "S/C Servo Solenoids"
- SP-3 Repairing Fault "Vehicle Speed Sensor"
- SP-4 Checking Switch Input
- SP-5 Testing On/Off Switch
- SP-6 Testing On/Off Switch For Minvan,Truck or Q-Body
- SP-7 Testing Resume Switch
- SP-8 Testing Resume Switch For Mini-Van,Truck or "Q" Body
- SP-9 Testing Set Switch
- SP-10 Testing Set Switch For Minivan,Truck or Q-Body
- SP-11 Testing Brake Switch Input
- SP-12 Testing Park/Neutral Switch Input
- SP-13 Checking Servo Power & Ground Circuits
- SP-13 Servo Actuator Test
- SP-14 Speed Control Performance Check
- Verification Tests
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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.