P1621

BAT Team

By BAT Team (Contact Me)
Last Updated 2017-01-17
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Trouble CodeFault LocationProbable Cause
P1621 Instrument Panel Engine Coolant Temperature Signal Short To Ground (AUDI)
Control Module Long Term Memory Performance Condition (BUICK, CADILLAC, CHEVROLET, GMC, PONTIAC, SATURN)
Speed Control Switch Always High (DODGE)
Fuel Cut Valve Malfunction (HYUNDAI)
Engine Control Module Internal Memory Performance (ISUZU, JAGUAR)
Engine Control Module Incorrect Immobilizer Code After Cranking (MAZDA)
A/C Compressor Clutch Relay High Output (SAAB)

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Other Manufacturer Specific Definitions for P1621

Control Module Long Term Memory Performance Conditions (GM)
Instrument panel, ECT signal - short to ground (Volkswagen)
Instrument panel, ECT signal - short to ground (Audi)
Engine control module (ECM) -programmingl memory (Buick)
Engine control module (ECM) -memory performance (Cadillac)
Engine control module (ECM) -malfunction (Chevrolet)
Speed Control Switch Always High (Dodge)
Engine control module (ECM) memory performance (Hummer)
Fuel Cut Valve Malfunction (Hyundai)
Engine control module (ECM) – internal memory performance (Isuzu)
Engine control module (ECM) (Jaguar)
Immobilizer control module (Land Rover)
Engine control module (ECM) – incorrect immobilizer code after cranking (Mazda)
Engine control module (ECM) -memoryperformance (Oldsmobile)
Engine control module (EeM) – memory performance (Pontiac)
Engine control module (ECM) – memory performance (Saab)
Engine control module (ECM) -memory performance (Saturn)
Immobilizer control module/engine control module (ECM) – communication malfunction (Suzuki)
Instrumentation control module, real time clock – communication malfunction (Volvo)

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