P CODE FAMILY

Powertrain code references — Page 62.

Engine, transmission and powertrain diagnostic references. Exact vehicle and module context still matters.

9,891 code references in powertrain

Volkswagen
P1795

Vehicle Speed Signal Circuit Open

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Jaguar
P1796

Jaguar 5 HP 24 CAN circuit malfunction

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Mazda / Nissan
P1796

Kick Down Switch Circuit

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Volkswagen
P1796

Vehicle Speed Signal Short To Ground

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Jaguar
P1797

Jaguar transmission missing the ECM CAN message

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Kia
P1797

Clutch Pedal Switch MT Or P/N Switch Circuit Fault

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Mazda / Nissan
P1797

P/N Switch Open Or Short Circuit

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Volkswagen
P1797

Vehicle Speed Signal Short To B+

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Jaguar
P1798

Jaguar transmission missing the instrument-pack CAN message

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Mazda / Nissan
P1798

Coolant Temperature Circuit

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Volkswagen
P1798

Output Speed Sensor 2 Circuit Range Performance

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Mazda / Nissan
P1799

Hold Switch Circuit

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Volkswagen
P1799

Output Speed Sensor 2 Circuit RPM Too High

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Buick / Cadillac +4
P1800

TCM Power Control Relay Circuit Open

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Buick / Cadillac +4
P1801

Performance Selector Switch Failure

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Buick / Cadillac +4
P1804

Ground Control Relay

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Ford / Lincoln +1
P1804

Transmission 4-Wheel Drive High Indicator Circuit Failure

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Ford / Lincoln +1
P1806

Transmission 4-Wheel Drive High Indicator Short Circuit To Battery

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Ford / Lincoln +1
P1808

Transmission 4-Wheel Drive Low Indicator Circuit Failure

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Buick / Cadillac +4
P1810

Pressure-switch states conflict with operating conditions

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Ford / Lincoln +1
P1810

TFP Valve Position Switch Circuit Transmission 4-Wheel Drive Low Indicator Short Circuit To Battery

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Buick / Cadillac +4
P1811

Shift duration remains long at maximum adaptation

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Buick / Cadillac +4
P1812

Transmission Over Temperature Condition

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Ford / Lincoln +1
P1812

Transmission 4-Wheel Drive Mode Select Circuit Failure

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Buick / Cadillac +4
P1813

Torque Control

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Volkswagen
P1813

Pressure Control Solenoid 1 Electrical

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Buick / Cadillac +4
P1814

Torque Converter Overstressed

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Volkswagen
P1814

Volkswagen pressure valve 1 open or grounded: N215 and N91 naming

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Buick / Cadillac +4
P1815

Transmission Range Switch Start In Wrong Range

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Ford / Lincoln +1
P1815

Transmission 4-Wheel Drive Mode Select Short Circuit To Ground

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Volkswagen
P1815

Volkswagen pressure valve 1 short to positive and the 01V connector

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Buick / Cadillac +4
P1816

Park/neutral indication conflicts with a driven ratio

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Buick / Cadillac +4
P1817

Reverse indication conflicts with forward drive

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Buick / Cadillac +4
P1818

Forward-range switch indication conflicts with reverse ratio

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Volkswagen
P1818

Pressure Control Solenoid 2 Electrical

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Buick / Saturn
P1819

Internal Mode Swtich No Start, Wrong Range

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Cadillac / Chevrolet +2
P1819

Internal Mode Switch No Start Wrong Range

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Ford / Lincoln +1
P1819

Transmission Neutral Safety Switch Short Circuit To Ground

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Volkswagen
P1819

Volkswagen pressure valve 2 open or grounded: confirm N216/N92 mapping

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Buick / Cadillac +4
P1820

Internal Mode Switch Circuit A Low

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Ford / Lincoln +1
P1820

Transmission Transfer Case Clockwise Shift Relay Coil Circuit Failure

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Volkswagen
P1820

Volkswagen pressure valve 2 short to supply and connector condition

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Buick / Cadillac +4
P1822

Internal-mode-switch B remains high when low is expected

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Ford / Lincoln +1
P1822

Transmission Transfer Case Clockwise Shift Relay Coil Short Circuit To Battery

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Buick / Cadillac +4
P1823

Internal-mode-switch P remains low when high is expected

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Volkswagen
P1823

Pressure Control Solenoid 3 Electrical

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Ford / Lincoln +1
P1824

Transmission 4-Wheel Drive Clutch Relay Circuit Failure

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Volkswagen
P1824

Volkswagen pressure valve 3 open or short to ground

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Buick / Cadillac +4
P1825

Internal Mode Switch Illegal Range

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Volkswagen
P1825

Volkswagen pressure valve 3 short-to-positive fault

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Buick / Cadillac +4
P1826

Internal Mode Switch Circuit C High

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Ford / Lincoln +1
P1826

Transmission 4-Wheel Drive Low Clutch Relay Circuit To Battery

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Ford / Lincoln +1
P1828

Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure

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Volkswagen
P1828

Pressure Control Solenoid 4 Electrical

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Volkswagen
P1829

Volkswagen pressure valve 4 fault and the DSG mechatronic naming caveat

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Ford / Lincoln +1
P1830

Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Battery

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Chrysler / Dodge +3
P1830

Open Or Shorted Condition Detected In The Clutch Pedal Switch Over-Ride Relay Control

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Volkswagen
P1830

Volkswagen pressure valve 4 short to supply: N218 and N94 context

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Buick / Cadillac +4
P1831

Transmission high-side driver 1 fails its on-state check

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Ford / Lincoln +1
P1832

Transmission Transfer Case Differential Lock-Up Solenoid Circuit Failure

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Buick / Cadillac +4
P1833

Transmission high-side driver 2 cannot sustain its command

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Ford / Lincoln +1
P1834

Transmission Transfer Case Differential Lock-Up Solenoid Short Circuit To Battery

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Volkswagen
P1834

Pressure Control Solenoid 5 Open Short To Ground

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Buick / Cadillac +4
P1835

Kick-Down Switch

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Volkswagen
P1835

Pressure Control Solenoid 5 Short To B+

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Buick / Cadillac +4
P1836

Kick-Down Switch Failed Open

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Buick / Cadillac +4
P1837

Kick-Down Switch Failed Short

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Ford / Lincoln +1
P1838

Transmission Transfer Case Shift Motor Circuit Failure

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Volkswagen
P1841

engine and transmission controller compatibility matters

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Buick / Cadillac +4
P1842

Shift-solenoid A control circuit open or held low

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Volkswagen
P1842

Check DTC Memory Of Instrument Panel ECU

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Buick / Cadillac +4
P1843

Shift-solenoid A control circuit held toward supply

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Volkswagen
P1843

Check DTC Memory Of Distance Control ECU

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Buick / Cadillac +4
P1844

Torque Reduction Signal Circuit Desired By TCM

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Volkswagen
P1844

Check DTC Memory Of Central Electronic Control ECU

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Buick / Cadillac +4
P1845

Transmission Gear Ratio Output Circuit

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Ford / Lincoln +1
P1846

Transmission Transfer Case Contact Plate A Circuit Failure

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Buick / Cadillac +4
P1847

2-3 Shift Solenoid Circuit High Voltage

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Volkswagen
P1847

Volkswagen ABS fault-memory referral and cross-module effects

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Volkswagen
P1848

Volkswagen engine-memory referral: diagnose the originating ECU fault

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Volkswagen
P1849

Check DTC Memory Of Transmission ECU

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Buick / Cadillac +4
P1850

Brake Band Apply Solenoid Circuit

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Ford / Lincoln +1
P1850

Transmission Transfer Case Contact Plate B Circuit Failure

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Volkswagen
P1850

Volkswagen missing engine-controller message and the replacement caution

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Buick / Cadillac +4
P1851

Brake Band Apply Solenoid Performance

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Volkswagen
P1851

The transmission misses an ABS control-module message

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Buick / Cadillac +4
P1852

Brake Band Apply Solenoid Low Voltage

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Volkswagen
P1852

CAN Bus Unplausible Message From Engine Control

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Buick / Cadillac +4
P1853

Brake Band Apply Solenoid High Voltage

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Volkswagen
P1853

Volkswagen implausible ABS message and the DSG communication-partner list

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Ford / Lincoln +1
P1854

Transmission Transfer Case Contact Plate C Circuit Failure

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Volkswagen
P1854

A hardware fault disrupts the powertrain data bus

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Volkswagen
P1855

The powertrain controllers fail a software-version compatibility check

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Volkswagen
P1856

Passat transmission receiving a G69 throttle fault message

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Volkswagen
P1857

the load-signal error sends diagnosis back to the engine ECU

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Ford / Lincoln +1
P1858

Transmission Transfer Case Contact Plate D Circuit Failure

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Volkswagen
P1858

The transmission receives an engine-speed fault message

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Volkswagen
P1859

Brake Switch Circuit Error Message From Engine Control

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Buick / Cadillac +4
P1860

Torque-converter PWM control circuit electrical fault

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Volkswagen
P1860

Kick Down Switch Error Message From Engine Control

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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.