THE CODE DIRECTORY
Diagnostic code references — Page 65.
Browse canonical reference entries. Each definition keeps its own source and vehicle-applicability limits.
Acura / Honda
P1671
A/T FI Data Line No Signal
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Buick / Cadillac +4
P1672
Low Engine Oil Level Lamp Control Circuit
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Acura / Honda
P1672
A/T FI Data Line Failure
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Buick / Cadillac +4
P1673
Engine Hot Lamp Control Circuit
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Buick / Cadillac +4
P1674
Tachometer Control Circuit
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Buick / Cadillac +4
P1675
EVAP Vent Solenoid Control Circuit
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Buick / Cadillac +4
P1676
Driver 4 Line 6
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Acura / Honda
P1676
Traction Control System FI Data Line No Signal
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Volkswagen
P1676
Drive By Wire MIL Circuit Electrical Malfunction
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Buick / Cadillac +4
P1677
Driver 4 Line 7
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Acura / Honda
P1677
Traction Control System FI Data Line Failure
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Volkswagen
P1677
Drive By Wire MIL Circuit Short To B+
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Acura / Honda
P1678
FPTDR Signal Line Failure
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Volkswagen
P1678
Drive By Wire MIL Circuit Short To Ground
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Volkswagen
P1679
Drive By Wire MIL Circuit Open Circuit
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Chrysler / Dodge +3
P1680
Clutch Released Switch Circuit Open Or Shorted
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Mazda
P1680
Metering Oil Pump Failure
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Buick / Cadillac +4
P1681
Driver 5 Line 1
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Acura / Honda
P1681
A/T FI Signal A Low Input
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Chrysler / Dodge +3
P1681
No Instrument Panel Cluster CCD/J1850 Messages Received
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Volkswagen
P1681
Control Module Programming Not Finished
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Buick / Cadillac +4
P1682
Driver 5 Line 2
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Acura / Honda
P1682
A/T FI Signal A High Input
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Chrysler / Dodge +3
P1682
Charging System Voltage Too Low
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Mazda
P1682
Metering Oil Pump Failure
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Buick / Cadillac +4
P1683
Driver 5 Line 3
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Chrysler / Dodge +3
P1683
Speed Control Power Relay Or Speed Control 12 Volt Driver Circuit Open Or Shorted
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Mazda
P1683
Metering Oil Pump Temperature Sensor Circuit
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Buick / Cadillac +4
P1684
Driver 5 Line 4
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Chrysler / Dodge +3
P1684
Battery Disconnected Within Last 50 Starts
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Mazda
P1684
Metering Oil Pump Position Sensor Circuit
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Volkswagen
P1684
Control Unit Programming Communication Error
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Buick / Cadillac +4
P1685
Driver 5 Line 5
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Chrysler / Dodge +3
P1685
Skim Invalid Key
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Mazda
P1685
Metering Oil Pump Stepping Motor Cont Circuit
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Buick / Cadillac +4
P1686
Driver 5 Line 6
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Acura / Honda
P1686
A/T FI Signal B Low Input
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Chrysler / Dodge +3
P1686
No SKIM Bus Message Received
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Mazda
P1686
Metering Oil Pump Stepping Motor Cont Circuit
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Volkswagen
P1686
Control Unit Error Programming
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Buick / Cadillac +4
P1687
Driver 5 Line 7
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Acura / Honda
P1687
A/T FI Signal B High Input
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Chrysler / Dodge +3
P1687
No Cluster Bus Message
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Mazda
P1687
Metering Oil Pump Stepping Motor Cont Circuit
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Chrysler / Dodge +3
P1688
Internal Fuel Injection Pump Controller Failure
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Mazda
P1688
Metering Oil Pump Stepping Motor Cont Circuit
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Buick / Cadillac +4
P1689
Delivered Torque Circuit Fault
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Chrysler / Dodge +3
P1689
No Communication Between ECM & Injection Pump Module
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Mazda
P1689
Oil Pressure Control Solenoid Circuit
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BMW
P1690
Malfunction Indicator Lamp MIL Electrical
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Buick / Cadillac +4
P1690
ECM Loop Overrun
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Ford / Lincoln +1
P1690
Wastegate Solenoid Circuit Malfunction
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Acura / Honda
P1690
Traction Control System STB Line Failure
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Chrysler / Dodge +3
P1690
Fuel Injection Pump CKP Sensor Does Not Agree With ECM CKP Sensor
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Mazda
P1690
Wastegate Solenoid Circuit
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Volkswagen
P1690
MIL Malfunction
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Buick / Cadillac +3
P1691
Coolant Gage Circuit Low Voltage
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Chrysler / Dodge +3
P1691
Fuel Injection Pump Controller Calibration Failure
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Mazda
P1691
Turbo Pressure Control Solenoid Circuit
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Oldsmobile
P1691
Coolant Gauge Circuit Low Voltage
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Volkswagen
P1691
MIL Open Circuit
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Buick / Cadillac +3
P1692
Coolant Gage Circuit High Voltage
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Mazda
P1692
Turbo Control Solenoid Circuit
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Oldsmobile
P1692
Coolant Gauge Circuit High Voltage
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Volkswagen
P1692
MIL Short To Ground
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Buick / Cadillac +4
P1693
Tachometer Circuit Low Voltage
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Chrysler / Dodge +3
P1693
DTC Detected In ECM Or PCM
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Kia
P1693
MIL Circuit Malfunction
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Mazda
P1693
Turbo Charge Control Circuit
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Volkswagen
P1693
MIL Short To B+
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Buick / Saturn
P1694
Tachometer Circuit High Voltag
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Cadillac / Chevrolet +2
P1694
Tachometer Circuit High Voltage
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Chrysler / Dodge +3
P1694
No CCD Messages Received From ECM
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Mazda
P1694
Turbo Charge Relief Circuit
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Volkswagen
P1694
MIL Open Short To Ground
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Buick / Cadillac +3
P1695
Remote Keyless Entry Circuit Low
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Chrysler / Dodge +3
P1695
No CCD/J1850 Message From BCM
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Oldsmobile
P1695
TCM To ECM Torque Reduction Circuit
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Buick / Cadillac +3
P1696
Remote Keyless Entry Voltage High
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Acura / Honda
P1696
Traction Control Fuel Cut Signal Low Input
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Jaguar
P1696
CAN Link Engine Control Module Cruise Control Module Circuit Network
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Chrysler / Dodge +4
P1696
PCM Failure EEPROM Write Denied
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Acura / Honda
P1697
Traction Control Fuel Cut Signal High Input
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Jaguar
P1697
Cruise Control Distance Control Input Circuit
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Chrysler / Dodge +3
P1697
PCM Failure SRI Mile Not Stored
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Chrysler / Dodge +3
P1698
No CCD Messages Received From PCM
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Mitsubishi
P1698
No CCD Messages From TCM
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Subaru
P1698
Engine Torque Control Cut Signal Circuit Low Input
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Chrysler / Dodge +3
P1699
No CCD/J1850 Messages Received From The Climate Control Module (CCM)
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Subaru
P1699
Engine Torque Control Cut Signal Circuit High Input
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Buick / Cadillac +4
P1700
Transmission MIL Request
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Jaguar
P1700
Transmission Indeterminate Failure Failed To Neutral
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Lexus
P1700
Vehicle Speed Meter Circuit Fault
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Subaru
P1700
Throttle Position Sensor Circuit Malfunction AT
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Suzuki
P1700
TCM Throttle Position Sensor Circuit Fault
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Toyota
P1700
Vehicle Speed Sensor 2 Circuit Fault
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Buick / Cadillac +4
P1701
Transmission MIL Request Circuit
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Ford / Lincoln +1
P1701
Reverse Engagement Error
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Mazda
P1701
Transmission Range Sensor Reverse Engagement Error
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Nissan
P1701
Fuel Trim
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These are code references, not a list of confirmed faults on every vehicle. Read the source and applicability notes, then match the exact vehicle, year, engine and scan report.