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Powertrain code references — Page 51.
Engine, transmission and powertrain diagnostic references. Exact vehicle and module context still matters.
Buick / Cadillac +9
P1451
Barometric Pressure Sensor Performance
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Ford / Lincoln +1
P1451
Ford canister-vent solenoid voltage disagrees with its commanded state
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Mazda
P1451
Canister Vent Solenoid Circuit
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Volkswagen
P1451
Secondary Air Injection Circuit Short To Ground
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BMW
P1452
DMTL switching-solenoid circuit high
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Ford / Lincoln +1
P1452
Inability of Evaporative Emission Control System to Bleed Fuel Tank
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Volkswagen
P1452
Secondary Air Injection System Circuit Open
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BMW
P1453
An open secondary-air relay control path
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Jaguar
P1453
Fuel Tank Pressure Relief Valve Malfunction
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Volkswagen
P1453
Exhaust Gas Temperature Sensor 1 Open Short To B+
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BMW
P1454
Secondary Air Injection Pump With Series Resistor Control Circuit Electrical
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Jaguar
P1454
Evaporative Emission Control System Vacuum Test
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Volkswagen
P1454
Exhaust Gas Temperature Sensor 1 Short To Ground
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Ford / Lincoln +1
P1455
Substantial Leak or Blockage in Evaporative Emission Control System
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Kia
P1455
Fuel Tank Sending Unit Open Or Short 1.8L
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Mazda
P1455
Fuel Tank Level Sensor Circuit
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Volkswagen
P1455
Volkswagen G235 exhaust-temperature plausibility and the BBW note
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BMW
P1456
Heated Catalyst Heater Power Supply Open Circuit Bank 1
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Acura / Honda
P1456
Honda EVAP leakage on the fuel-tank side
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Mazda
P1456
Fuel Tank Temperature Sensor Circuit
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Volkswagen
P1456
Exhaust Gas Temperature Control Bank 1 Limit Attained
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BMW
P1457
Heated Catalyst Heater Power Switch Temperature Sensor Electrical Bank 1
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Ford / Lincoln +1
P1457
Unable To Pull Vacuum In Tank
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Acura / Honda
P1457
Honda EVAP canister-side leak assessment
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Kia
P1457
Purge Solenoid Valve Low System Malfunction
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Mazda
P1457
Purge Solenoid Control System
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Volkswagen
P1457
Exhaust Gas Temperature Sensor 2 Open Short To B+
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Kia / Mazda
P1458
A/C Compressor Clutch Signal Fault
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Volkswagen
P1458
Volkswagen G236 exhaust-temperature sensor short to ground
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BMW
P1459
Heated Catalyst Heater Power Supply Open Circuit Bank 2
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Acura / Honda
P1459
EVAP Purge Flow Switch Malfunction
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Volkswagen
P1459
Exhaust Gas Temperature Sensor 2 Range Performance
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BMW
P1460
Heated Catalyst Heater Power Switch Temperature Sensor Electrical Bank 2
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Buick / Cadillac +7
P1460
Cooling Fan Control System
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Ford / Lincoln +1
P1460
Ford A/C relay primary control fails its electrical check
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Geo
P1460
Cooling Fan Control System Fault
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Suzuki
P1460
Radiator Fan Control System Fault
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Volkswagen
P1460
Exhaust Gas Temperature Control Bank 2 Limit Attained
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BMW
P1461
Heated Catalyst Gate Voltage Signal Low
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Ford / Lincoln +1
P1461
Ford historical A/C pressure input is above its voltage limit
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Volkswagen
P1461
Exhaust Gas Temperature Control Bank 1 Range Performance
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BMW
P1462
Heated Catalyst Internal Control Module Checksum ROM Error
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Ford / Lincoln +1
P1462
Ford historical A/C pressure input is below its voltage limit
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Volkswagen
P1462
Exhaust Gas Temperature Control Bank 2 Range Performance
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BMW
P1463
Heated Catalyst Battery Temperature Sensor 1 Electrical
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Ford / Lincoln +1
P1463
Ford A/C pressure does not change enough when the clutch engages
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BMW
P1464
Heated Catalyst Battery Temperature Sensor 2 Electrical
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Ford / Lincoln +1
P1464
Ford A/C demand was active when self-test expected otherwise
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Nissan
P1464
Fuel Level Sensor Circuit Ground Signal
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BMW
P1465
Heated Catalyst Battery Temperature Sensor 1 or 2 Plausibility
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Ford / Lincoln +1
P1465
A/C Relay Circuit Malfunction
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Mercedes-Benz
P1465
EPW Power
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Volkswagen
P1465
Additive Pump Short To B+
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BMW
P1466
Heated Catalyst Power Switch Temperature Sensor Plausibility
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Ford / Lincoln +1
P1466
A/C Refrigerant Temperature Sensor Circuit Malfunction
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Volkswagen
P1466
Additive Pump Open Short To Ground
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BMW
P1467
Heated Catalyst Comparison Battery Voltages of Power Switches Plausibility
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Volkswagen
P1467
EVAP Canister Purge Solenoid Valve Short To B+
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BMW
P1468
Heated Catalyst Battery Disconnecting Switch Plausibility
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Volkswagen
P1468
EVAP Canister Purge Solenoid Valve Short To Ground
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Ford / Lincoln +1
P1469
Ford A/C clutch cycles too frequently for the control strategy
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Volkswagen
P1469
EVAP Canister Purge Solenoid Valve Open
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BMW
P1470
The leak-detection pump has an electrical circuit fault
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Mercedes-Benz
P1470
Pressure Control Flap Vacuum Transducer Y312
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Volkswagen
P1470
EVAP Emission Control System LDP Circuit Electrical Malfunction
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Volkswagen
P1471
Leak-detection pump V144 has a supply-side circuit fault
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BMW
P1472
Diagnostic Module Tank Leakage DM-TL Switching Solenoid Control Circuit Electrical
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Volkswagen
P1472
Leak-detection pump V144 circuit shorted to ground
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BMW
P1473
Diagnostic Module Tank Leakage DM-TL Pump Current Plausibility
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Ford / Lincoln +1
P1473
Fan Secondary High with Fans Off
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Volkswagen
P1473
Volkswagen leak-detection pump open circuit and canister sealing
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Ford / Lincoln +1
P1474
Ford low-speed fan and hydraulic-fan systems use different P1474 tests
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BMW
P1475
Leakage Diagnostic Pump Reed Switch Did Not Close
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Dodge / Jeep
P1475
Auxiliary 5 Volt Output Too High
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Jaguar / Mazda
P1475
Fan Relay Low Circuit
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Mercedes-Benz
P1475
Resonance Intake Line Switchover Valve Y227
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Volkswagen
P1475
a leak-detection pump signal fault is not a proven EVAP leak
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BMW
P1476
Leakage Diagnostic Pump Clamped Tube
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Dodge / Jeep
P1476
Too Little Secondary Air
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Jaguar / Mazda
P1476
Fan Relay High Circuit
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Mercedes-Benz
P1476
Resonance Intake Manifold Switchover Valve Y226
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Volkswagen
P1476
Volkswagen EVAP pump insufficient vacuum: test the supply separately
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BMW
P1477
Leakage Diagnostic Pump Reed Switch Did Not Open
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Dodge / Jeep
P1477
Too Much Secondary Air
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Volkswagen
P1477
The evaporative leak-detection pump malfunctions
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Dodge / Jeep
P1478
Battery Temp Sensor Voltage Out Of Limit
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Volkswagen
P1478
EVAP Emission Control System LDP Clamped Tube Detected
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Ford / Lincoln +1
P1479
Ford high-speed cooling-fan relay control fails its electrical comparison
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Dodge / Jeep
P1479
Transmission Fan Relay Circuit Open Or Shorted
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Buick / Cadillac +5
P1480
Cooling Fan 1 Control Circuit High
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Ford / Lincoln +1
P1480
Fan Secondary Low with Low Fans On
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Mercedes-Benz
P1480
Preglow Control
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Subaru
P1480
Subaru cooling-fan relay high input
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Ford / Lincoln +1
P1481
Fan Secondary Low with High Fans On
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Dodge / Jeep +2
P1481
EATX RPM Pulse Generator Signal For Misfire Detection
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Mercedes-Benz
P1481
Glow Plug Failure
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Dodge / Jeep +2
P1482
Catalyst Temperature Sensor Circuit Shorted Low
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Mercedes-Benz
P1482
Preglow Control Module N142
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Cadillac / Oldsmobile
P1483
Engine Cooling System Performance
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Buick / Chevrolet +3
P1483
Engine Coolilng System Performance
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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.