P1621 OBD Trouble Code

7 results found

P1621 - Audi
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Instrument panel, ECT signal - short to ground

Cause

Wiring short to ground, instrument panel

P1621 - GM
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Control Module Long Term Memory Performance Conditions

Cause

Key on or engine running, then the PCM detected a fault in the non-volatile memory had occurred

P1621 - Isuzu
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Engine control module (ECM) - internal memory performance

Cause

ECM

P1621 - Jaguar
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Engine control module (ECM)

Cause

ECM

P1621 - Mazda
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Engine control module (ECM) - incorrect immobilizer code after cranking

Cause

Immobilizer word code not programmed

P1621 - Saab
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

AC compressor clutch relay - high output

Cause

Wiring short to positive, AC compressor clutch relay

P1621 - Volkswagen
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Instrument panel, ECT signal - short to ground

Cause

Wiring short to ground, instrument panel

Try also: https://www.obd-codes.com/p1621