P CODE FAMILY
Powertrain code references — Page 61.
Engine, transmission and powertrain diagnostic references. Exact vehicle and module context still matters.
BMW
P1765
CAN Throttle Valve
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Chrysler / Dodge +3
P1765
Trans 12 Volt Supply Relay Control Circuit Open Or Shorted
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Mazda
P1765
Transmission 3-2 Timing Solenoid Valve
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Lexus / Toyota
P1765
Linear Shift Solenoid Circuit Fault
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Volkswagen
P1765
Hydraulic Pressure Sensor 2 Adaptation At Limit
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Ford / Lincoln +1
P1766
Shift Solenoid D Performance
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Volkswagen
P1766
Throttle Angle Signal Stuck Off
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Ford / Lincoln +1
P1767
Torque Converter Clutch Circuit Malfunction
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Mazda
P1767
Torque Converter Clutch Solenoid Circuit
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Volkswagen
P1767
Throttle Angle Signal Stuck On
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Ford / Lincoln +1
P1768
Performance Normal Winter Mode Input Malfunction
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Acura / Honda
P1768
Automatic Transmission System Malfunction
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Volkswagen
P1768
Hydraulic Pressure Sensor 2 Too High
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Volkswagen
P1769
Hydraulic Pressure Sensor 2 Too Low
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BMW
P1770
CAN Torque Interface
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Ford / Lincoln +1
P1770
Clutch Solenoid Circuit Malfunction
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Mazda
P1770
Clutch Solenoid Circuit
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Volkswagen
P1770
Load Signal Range Performance
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Mazda
P1771
Throttle Position Sensor Circuit Open To Transmission Control Module
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Volkswagen
P1771
Load Signal Stuck Off
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Mazda
P1772
Throttle Position Sensor Circuit Shorted To Transmission Control Module
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Volkswagen
P1772
Load Signal Stuck On
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Acura / Honda
P1773
Automatic Transmission System Malfunction
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Volkswagen
P1773
Hydraulic Pressure Sensor 1 Too High
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Volkswagen
P1774
Hydraulic Pressure Sensor 1 Too Low
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Jaguar
P1775
Transmission System MIL Fault
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Mazda
P1775
Torque Down Signal 1 Circuit
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Volkswagen
P1775
Hydraulic Pressure Sensor 1 Adaptation At Limit
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Jaguar
P1776
Ignition Retard Request Duration
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Mazda
P1776
Torque Down Signal 2 Circuit
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Jaguar
P1777
Ignition Retard Request Circuit
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Mazda
P1777
Torque Down Response Signal Circuit
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Jaguar
P1778
Transmission Reverse IP Circuit
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Volkswagen
P1778
Solenoid EV7 Electrical Malfunction
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Buick / Cadillac +4
P1779
Engine Torque Delivered To TCM Signal
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Ford / Lincoln +1
P1779
Transmission Control Indicator Lamp Circuit Malfunction
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Jaguar
P1779
Load Control
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BMW
P1780
CAN Torque Reduction
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Buick
P1780
Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit
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Cadillac / Chevrolet +2
P1780
Park/Neutral Position (PNP) Switch Circuit Engine Torque Signal Circuit
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Ford / Lincoln +1
P1780
Transmission Control Switch Circuit is Out of Self-Test Range
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Lexus
P1780
PNP Switch Malfunction
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Mercedes-Benz
P1780
Modulation Pressure Switchover Valve ATCC Y34 Or Upshift Delay Switchover Valve ATCC Y35
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Mazda / Nissan
P1780
Transmission Control Switch Circuit Overdrive Off Switch Not Cycled During The Self Test
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Oldsmobile
P1780
Park Neutral Position Switch Circuit Engine Torque Signal Circuit
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Toyota
P1780
Park Neutral Position Switch Malfunction Only For A/T
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Volkswagen
P1780
Engine Intervention Readable
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Ford / Lincoln +1
P1781
4x4 Low Switch is Out of Self-Test Range
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Mercedes-Benz
P1781
Upshift Delay Switchover Valve ATCC Y35
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Mazda / Nissan
P1781
Transmission 4x4 Low Switch Out Of Range Fault
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Volkswagen
P1781
Engine Torque Reduction Open Short To Ground
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Ford / Lincoln +1
P1782
P/ES Circuit Out Of Self Test Range
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Volkswagen
P1782
Engine Torque Reduction Short To B+
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Ford / Lincoln +1
P1783
Transmission Over-Temperature Condition
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Mazda / Nissan
P1783
Transmission Fluid Temperature High Input
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Ford / Lincoln +1
P1784
Transmission Mechanical Failure First And Reverse
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Volkswagen
P1784
Shift Up Down Wire Open Short To Ground
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Ford / Lincoln +1
P1785
Transmission Mechanical Failure First And Second
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Volkswagen
P1785
Shift Up Down Wire Short To B+
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Ford / Lincoln +1
P1786
3-2 Downshift Error
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Volkswagen
P1786
Reversing Light Circuit Open
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Ford / Lincoln +1
P1787
2-1 Downshift Error
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Volkswagen
P1787
Reversing Light Circuit Short To Ground
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Ford / Lincoln +1
P1788
Pressure Control Solenoid B Open Circuit
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Acura / Honda
P1788
Automatic Transmission System Malfunction
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Mazda / Nissan
P1788
Pressure Control Solenoid B Circuit Open
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Volkswagen
P1788
Reversing Light Circuit Short To B+
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Ford / Lincoln +1
P1789
Pressure Control Solenoid B Short Circuit
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Jaguar
P1789
Ignition Supply Malfunction
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Mazda / Nissan
P1789
Pressure Control Solenoid B Circuit Shorted
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Volkswagen
P1789
Idle Speed Intervention Circuit Error Message From Engine Control
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Buick / Cadillac +4
P1790
Transmission Control Module Checksum
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Acura / Honda
P1790
TCM A/T TP Sensor Circuit Fault
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Jaguar
P1790
Ignition Supply Malfunction
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Mazda / Nissan
P1790
TP Mechanical Circuit
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Volkswagen
P1790
Transmission Range Display Circuit Open
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Buick / Cadillac +4
P1791
Transmission Control Module Loop
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Acura / Honda
P1791
TCM A/T Vehicle Speed Sensor Circuit Fault
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Jaguar
P1791
Ignition Supply Malfunction
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Mazda / Nissan
P1791
TP Electric Circuit
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Volkswagen
P1791
Transmission Range Display Circuit Short To Ground
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Buick / Cadillac +4
P1792
Transmission Control Module Reprogrammable Memory
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Jaguar
P1792
Ignition Supply Malfunction
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Mazda / Nissan
P1792
Barometer Pressure Circuit
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Volkswagen
P1792
Transmission Range Display Circuit Short To B+
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Buick / Cadillac +4
P1793
Transmission Control Module Stack Overrun
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Acura / Honda
P1793
Automatic Transmission System Malfunction
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Jaguar
P1793
Ignition Supply Malfunction
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Mazda / Nissan
P1793
Intake Air Volume Circuit
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Volkswagen
P1793
Output Speed Sensor 2 Circuit No Signal
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Jaguar
P1794
Battery Voltage Circuit
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Kia
P1794
Battery Or Circuit Failure
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Mazda / Nissan
P1794
Powertrain Control Module Battery Direct Power Circuit
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Buick / Cadillac +4
P1795
CAN Bus Throttle Body Position
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Ford / Lincoln +1
P1795
Idle Switch Circuit Malfunction
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Acura / Honda
P1795
Automatic Transmission System Malfunction
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Jaguar
P1795
Inconsistent CAN Level
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Kia
P1795
4WD Switch Signal Malfunction
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Mitsubishi
P1795
Throttle Position Input Circuit To TCM
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Mazda / Nissan
P1795
Idle Switch Circuit
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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.