P1621
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Manufacturer Specific Definitions for P1621
| Make | Fault Location |
|---|---|
| Audi | Instrument panel, ECT signal - short to ground |
| Buick | Engine control module (ECM) -programmingl memory |
| Cadillac | Engine control module (ECM) -memory performance |
| Chevrolet | Engine control module (ECM) -malfunction |
| Citroen | Control Module Long Term Memory Performance/ Immobilizer Code Words Do Not Match |
| Daewoo | Fuel Cut Valve Mal |
| Dodge | Speed Control Switch Always High |
| Gmc | Engine control module (ECM) -memory performance |
| Gm | Control Module Long Term Memory Performance Conditions |
| Hummer | Engine control module (ECM) memory performance |
| Hyundai | Fuel Cut Valve-Malfunction. |
| Isuzu | Engine control module (ECM) – internal memory performance |
| Jaguar | Engine control module (ECM) |
| Land Rover | Immobilizer control module |
| Mazda | Engine control module (ECM) – incorrect immobilizer code after cranking |
| Oldsmobile | Engine control module (ECM) -memoryperformance |
| Opel | Engine control module (ECM) - defective |
| Peugeot | Control Module Long Term Memory Performance/ Immobilizer Code Words Do Not Match |
| Pontiac | Engine control module (EeM) – memory performance |
| Saab | Engine control module (ECM) – memory performance |
| Saturn | Engine control module (ECM) -memory performance |
| Suzuki | Immobilizer control module/engine control module (ECM) – communication malfunction |
| Volvo | Instrumentation control module, real time clock – communication malfunction |
| Volkswagen | Instrument panel, ECT signal - short to ground |
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