626 1999-2001

2.0L L4 VIN - Std 4

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Trouble Code: P1479



Condenser Fan Relay Control Circuit Malfunction

Possible Causes:



Condenser fan relay control circuit is open or shorted to ground
 
Condenser fan relay control circuit is shorted to system power
 
Condenser fan relay power circuit is open or shorted to ground
 
Condenser fan relay is damaged or has failed
 
PCM has failed
 

Trouble Code: P1487



EGR Boost Sensor Solenoid Circuit Malfunction

Possible Causes:



EGR boost sensor solenoid circuit is open or shorted to ground
 
EGR boost sensor solenoid power circuit is open
 
EGR boost sensor solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P1501



Vehicle Speed Sensor Circuit Malfunction (Self-Test)

Possible Causes:



Charging system problem (check alternator for AC leakage)
 
Ignition system component has failed (i.e., check for signs of primary or secondary voltage leaking from the coil, coil wire, spark plug wires or boots, or the spark plug insulators
 
PCM has failed
 

Trouble Code: P1504



Idle Air Control Solenoid Circuit Malfunction

Possible Causes:



IAC solenoid control circuit is open or shorted to ground
 
IAC solenoid power circuit is open between the valve and PCM
 
IAC solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P1504



Idle Air Control Solenoid Circuit Malfunction

Possible Causes:



IAC solenoid No. 1 or No. 2 control circuit is open
 
IAC solenoid No. 1 or No. 2 control circuit is shorted to ground
 
IAC solenoid is damaged or has failed (an intermittent fault)
 
PCM has failed
 

Trouble Code: P1506



Idle Air Control System RPM Higher Than Expected

Possible Causes:



EGR valve is stuck open or leaking, or the gasket is leaking
 
EVAP purge valve is leaking or stuck in open position
 
IAC solenoid control circuit is shorted to ground (intermittent)
 
IAC valve is stuck open (it may be dirty or have failed)
 
PCV valve is leaking, or a leak in the intake manifold exists
 
PCM has failed
 

Trouble Code: P1507



Idle Air Control System RPM Lower Than Expected

Possible Causes:



Air filter element is severely restricted, or air inlet is plugged
 
Base engine problems: cylinder compression or valve timing
 
IAC valve is stuck in one position (it may be dirty or has failed)
 
IAC solenoid or valve is damaged or has failed
 
Throttle body is dirty, damaged or contaminated
 
PCM has failed
 

Trouble Code: P1512



Variable Timing Control System Malfunction

Possible Causes:



VTCS actuator control circuit is shorted to ground
 
VTCS shutter valve actuator is stuck closed
 
VTCS vacuum hose is loose or disconnected
 
VTCS valve is damaged or has failed
 
PCM has failed
 

Trouble Code: P1516



Neutral Switch Circuit Malfunction

Possible Causes:



Neutral switch signal circuit is open or shorted to ground
 
Neutral switch power circuit is open or shorted to ground
 
Neutral switch is damaged or has failed
 
PCM has failed
 

Trouble Code: P1569



Variable Timing Control System Circuit Low Input

Possible Causes:



VTCS control circuit is shorted to ground
 
VTCS solenoid valve is damaged or has failed
 
PCM is damaged
 

Trouble Code: P1602



PCM Communication Line to TCM Error

Possible Causes:



Key (the transponder) is damaged or has failed
 
PCM communication line to Immobilizer is open, shorted to ground or shorted to system power
 
Transponder "coil" is damaged or has failed
 
PCM or the Immobilizer unit has failed
 

Trouble Code: P1603



Code Word Not Registered In The PCM

Possible Causes:



Check for any related Technical Service Bulletins
 
Perform the Immobilizer "code word" reprogramming procedure
 

Trouble Code: P1604



Key Identification Numbers Not Registered In The PCM

Possible Causes:



Check for any related Technical Service Bulletins
 
Perform the Immobilizer "Key ID" reprogramming procedure
 

Trouble Code: P1621



Key Identification Number Not Registered In The PCM

Possible Causes:



Immobilizer problem during transformation of the "code word"
 
PCM problem during transformation of the "code word"
 
Immobilizer Unit has failed
 
PCM has failed
 

Trouble Code: P1622



Key Identification Number Does Not Match In The PCM

Possible Causes:



An "unregistered" key was used during Step 3 of the Immobilizer Unit replacement procedure
 
A problem occurred during transformation of the Key ID number stored in the PCM
 

Trouble Code: P1623



Code Word or Key ID Number Read/Write Error in the PCM

Possible Causes:



Perform a PCM "reset" procedure - if the same trouble code resets, the PCM has failed
 
Reprogram the Immobilizer Unit after the PCM is replaced
 

Trouble Code: P1624



Immobilizer Communication Error

Possible Causes:



Perform a PCM "reset" procedure
 
Attempt to start the engine three (3) times
 
If the code resets, check for other codes related to a No Start
 
Perform engine diagnostics to determine the cause of No Start
 

Trouble Code: P1633



Battery Overcharge

Possible Causes:



Generator is damaged or has failed (in overcharge condition)
 
PCM has failed
 

Trouble Code: P1650



Power Steering Pressure Switch Circuit Malfunction (Self-Test)

Possible Causes:



PSP signal circuit is open or shorted to ground
 
PSPS ground circuit is open (at the switch mounting point)
 
PSPS is damaged or has failed
 
PCM has failed
 

Trouble Code: P1652



Power Steering Pressure Switch Circuit Malfunction

Possible Causes:



PSP signal circuit is open or shorted to ground
 
PSPS ground circuit is open (at the switch mounting point)
 
PSPS is damaged or has failed
 
PCM has failed
 

Trouble Code: PATS-01



ID Number Unregistered in Immobilizer Unit is Input After Engine Cranking

Possible Causes:



ID number is unregistered in immobilizer unit
 

Trouble Code: PATS-02



ID Number Format Error (voltage range, frequency)

Possible Causes:



Defective transponder in the key
 

Trouble Code: PATS-03



ID Number is Not Input Into Immobilizer Unit After Cranking Engine

Possible Causes:



No transponder in the key
 
Defective transponder in the key (ID number is not output.)
 
Defective coil at steering lock
 
Defective wiring harness between coil and immobilizer unit
 

Trouble Code: PATS-11



Open Circuit in Coil or Wiring Harness Between Immobilizer Unit and Coil

Possible Causes:



Open circuit in coil
 
Poor connection of coil connector
 
Poor connection of immobilizer unit
 
Defective wiring harness between immobilizer unit and coil
 

Trouble Code: PATS-21



Code Word/ID Number Memorized in Immobilizer Unit EEPROM Cannot Be Read

Possible Causes:



Defective immobilizer unit
 

Trouble Code: PATS-24



Open or Short Circuit In Wiring Harness Between Immobilizer Unit and PCM

Possible Causes:



Defective immobilizer unit
 
Defective PCM
 
Poor connection of connector
 
Defective wiring harness
 

Trouble Code: PATS-30



Immobilizer Unit-PCM Communication Error

Possible Causes:



Defective immobilizer unit
 
Defective PCM
 

Trouble Code: SRS-01



SAS Control Module Connector Poor Connection

Possible Causes:



Poor connection of any SAS CM connector
 
Malfunction of SAS CM connector
 

Trouble Code: SRS-02



SAS Control Module

Possible Causes:



SAS CM malfunction
 

Trouble Code: SRS-03



Power Supply of SAS Control Module

Possible Causes:



Weak battery
 
Open or short circuit in wiring harness
 
Poor connection of connector
 
Damaged SAS unit
 

Trouble Code: SRS-05



Harness Between SAS Control Module And Side Air Bag Sensor

Possible Causes:



Vehicle with side air bag
 

-Passenger-side side air bag sensor malfunction

-SAS control module malfunction

-Open or short circuit in wiring harness among SAS control module, driver-side side air bag sensor and passenger-side side air bag sensor

-Poor connection of connector among SAS control module, driver-side side air bag sensor and passenger-side side air bag sensor



Vehicle without side air bag
 

-Open or short circuit in wiring harness between SAS control module and ground

-SAS control module malfunction

Trouble Code: SRS-06



Driver-side Air Bag Module System

Possible Causes:



-Driver-side air bag module malfunction
 
-Clock spring malfunction
 
-Malfunction in wiring harness between SAS control module and driver-side air bag module
 
-Inoperative connectors between clock spring and SAS control module
 
-SAS control module malfunction
 

Trouble Code: SRS-07



Passenger-side Air Bag Module System

Possible Causes:



-Passenger-side air bag module malfunction
 
-Malfunction in wiring harness between SAS control module and passenger-side air bag module
 
-Inoperative connectors between passenger-side air bag module and SAS control module
 
-SAS control module malfunction
 

Trouble Code: SRS-11



Wiring Harness Between Terminal U Of SAS Control Module Connector And Ground

Possible Causes:



-Inoperative connectors between SAS control module and ground
 
-Open or short circuit in wiring harness between SAS control module and ground
 
-SAS control module malfunction
 

Trouble Code: SRS-12



Wiring Harness Between Terminal U Of SAS Control Module Connector And Ground

Possible Causes:



-Inoperative connectors between SAS control module and ground
 
-Open or short circuit in wiring harness between SAS control module and ground
 
-SAS control module malfunction
 

Trouble Code: SRS-21



Driver-Side Side Air Bag Sensor Connector Poor Connection

Possible Causes:



-Driver-side side air bag sensor connector malfunction
 
-Poor connection of driver-side side air bag sensor connector
 
-Driver-side side air bag sensor malfunction
 

Trouble Code: SRS-22



Driver-side Side Air Bag Sensor

Possible Causes:



-Driver-side side air bag sensor malfunction
 

Trouble Code: SRS-23



Battery

Possible Causes:



-Weak battery
 
-Malfunction in wiring harness between battery and driver-side side air bag sensor.
 
-Driver-side side air bag sensor malfunction
 

Trouble Code: SRS-25



Harness Between SAS Control Module And Driver-Side Side Air Bag Sensor

Possible Causes:



-Open or short circuit in wiring harness
 
-Driver-side side side air bag sensor malfunction
 

Trouble Code: SRS-26



Driver-side Side Air Bag Module System

Possible Causes:



-Driver-side side air bag module malfunction
 
-Malfunction in wiring harness between driver-side side air bag sensor and driver-side side air bag module
 
-Inoperative connectors between driver-side side air bag sensor and driver-side side air bag module.
 
-Driver-side side air bag sensor malfunction
 

 
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