Mazda Car 2002-04

2.0L L4 - Auto 6

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Trouble Code: P1765



Transmission 3-2 Timing Solenoid Circuit Malfunction

Possible Causes:



3-2/TCCS control circuit to TCM is open or shorted to ground
 
3-2/TCCS control circuit to TCM is shorted to system power
 
3-2/TCCS is damaged or has failed
 
PCM has failed
 

Trouble Code: P1767



Torque Converter Clutch Solenoid Circuit Malfunction (Self-Test)

Possible Causes:



TCC solenoid control circuit is open or shorted to ground
 
TCC solenoid control circuit is shorted to power
 
TCC solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P1780



Overdrive Off Switch Circuit Malfunction (Self-Test

Possible Causes:



O/D switch not cycled at the proper time in the KOER Self-Test
 
O/D switch signal circuit is open or shorted to ground
 
O/D switch signal circuit is shorted to VREF or system power
 
O/D switch is damaged, out-of-adjustment or has failed
 
PCM has failed
 

Trouble Code: P1783



Transmission Fluid Temperature Sensor Circuit High Input

Possible Causes:



ATF level is low, or the fluid is contaminated or burnt
 
Vehicle driven with excessive loads, or trailer towing conditions
 
TCC clutch is damaged or has failed (it may be slipping)
 
TFT sensor signal circuit is open (an intermittent fault)
 
Transaxle cooling system is damaged or has failed
 
PCM has failed
 

Trouble Code: P1788



A/T 3-2T/CCS Circuit Malfunction

Possible Causes:



3-2/TCCS control circuit is open
 
3-2/TCCS control circuit is shorted to system power (B+)
 
3-2/TCCS is damaged or has failed
 
PCM has failed (the solenoid driver circuit may be open)
 

Trouble Code: P1789



A/T 3-2T/CCS Circuit Malfunction

Possible Causes:



3-2/TCCS control circuit is shorted to ground
 
3-2/TCCS is damaged or has failed
 
PCM has failed
 

Trouble Code: P1794



Battery Direct To PCM Circuit Malfunction

Possible Causes:



KAM circuit is open (the problem may be intermittent)
 
KAM circuit is shorted to ground (KAM fuse is blown)
 
KAM circuit connection loose in wiring harness or at the PCM
 
PCM has failed
 

Trouble Code: P1901



Turbine Speed Sensor Circuit Malfunction

Possible Causes:



TSS signal circuit is open (an intermittent fault)
 
TSS signal circuit is shorted to ground (an intermittent fault)
 
TSS signal circuit is shorted to system power (intermittent fault)
 
TSS is damaged or has failed
 
PCM has failed
 

Trouble Code: U0101



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
A/C System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U0121



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
A/C System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U0155



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
A/C System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U0167



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
A/C System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U0302



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
A/C System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U1020



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
A/C System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U1039



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
Vehicle Speed System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U1040



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
Vehicle Speed System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U1051



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
ABS System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U1131



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
Fuel System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U1147



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
Vehicle Security System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U1451



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
Anti-Theft System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U1262



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
Anti-Theft System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U1900



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
Vehicle Security System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U2013



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
Vehicle Security System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U2023



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
Vehicle Security System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U2050



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
Vehicle Security System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U2051



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
Vehicle Security System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: U2243



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
Vehicle Security System controller is damaged or has failed
 
PCM has failed
 

Trouble Code: P0500



Vehicle Speed Sensor Circuit Malfunction

Possible Causes:



VSS signal circuit is open, shorted to ground or to power
 
VSS power circuit is open or shorted to ground
 
VSS is damaged or has failed
 
PCM has failed
 

Trouble Code: P0715



Turbine Shaft Sensor Circuit Malfunction

Possible Causes:



TSS (+) signal circuit is open (an intermittent fault)
 
TSS (+) signal circuit shorted to ground (intermittent fault)
 
TSS (-) signal circuit is open (an intermittent fault)
 
TSS (-) signal circuit shorted to ground (intermittent fault)
 
TSS is damaged or has failed
 
PCM has failed
 

Trouble Code: P0720



Output Shaft Sensor Circuit Malfunction

Possible Causes:



OSS (+) signal circuit is open or shorted to ground
 
OSS (-) signal circuit is open or shorted to ground
 
OSS is damaged or has failed
 
PCM has failed
 

Trouble Code: P0731



Transmission 1st Gear Ratio Incorrect

Possible Causes:



ATF level is too low, or the ATF is badly deteriorated
 
A/T line pressure is low, or the oil pump has failed
 
SSA, SSB, SSC or the PCS is stuck (mechanical fault)
 
A/T 1-2 clutch is slipping (mechanical fault)
 
A/T 1-2 shift valve is stuck (mechanical fault)
 
A/T Pressure regulator or the pressure modifier valve is stuck
 
A/T solenoid reducing valve is stuck (mechanical fault)
 
PCM has failed
 

Trouble Code: P0732



Transmission 2nd Gear Ratio Incorrect

Possible Causes:



ATF level is too low, or the ATF is badly deteriorated
 
A/T line pressure is low, or the oil pump has failed
 
SSA, SSB, SSC or the PCS is stuck (mechanical fault)
 
A/T 2-3 clutch is slipping (mechanical fault)
 
A/T 1-2 or the 2-3 shift valve is stuck (mechanical fault)
 
A/T Pressure regulator or the pressure modifier valve is stuck
 
A/T solenoid reducing valve is stuck (mechanical fault)
 
PCM has failed
 

Trouble Code: P0733



Transmission 3rd Gear Ratio Incorrect

Possible Causes:



ATF level is too low, or the ATF is badly deteriorated
 
A/T line pressure is low, or the oil pump has failed
 
SSA, SSB, SSC or the PCS is stuck (mechanical fault)
 
A/T 3-4 clutch is slipping (mechanical fault)
 
A/T 2-3 or the 3-4 shift valve is stuck (mechanical fault)
 
A/T Pressure regulator or the pressure modifier valve is stuck
 
A/T solenoid reducing valve is stuck (mechanical fault)
 
PCM has failed
 

Trouble Code: P0734



Transmission 4th Gear Ratio Incorrect

Possible Causes:



ATF level is too low, or the ATF is badly deteriorated
 
A/T line pressure is low, or the oil pump has failed
 
SSA, SSB, SSC or the PCS is stuck (mechanical fault)
 
A/T 2-4 brake bank or 3-4 clutch is slipping (mechanical fault)
 
A/T 1-2, 2-3 or 3-4 shift valve is stuck (mechanical fault)
 
A/T Pressure regulator, pressure modifier or solenoid reducing valve is stuck
 
PCM has failed
 

Trouble Code: P0745



Electronic Pressure Control Solenoid Circuit Malfunction

Possible Causes:



PCS control circuit is open (continuous high signal)
 
PCS control circuit is shorted to ground (continuous low signal)
 
PCS control circuit is shorted to system power (B+)
 
PCS is damaged or has failed
 
PCM has failed
 

Trouble Code: P0756



A/T Shift Solenoid -B- Performance (Mechanical)

Possible Causes:



SSB is stuck in -on- position (a mechanical fault)
 
SSB is damaged is damaged or has failed (a mechanical fault)
 
SSB has a hydraulic problem
 
PCM has failed
 

Trouble Code: P0841



Neutral switch input circuit problem

Possible Causes:



Neutral switch malfunction
 
Poor connection of neutral switch connector or PCM connector
 
Short to ground in wiring harness between neutral switch terminal A and PCM terminal 1S
 
Open circuit in wiring harness between ground and neutral switch terminal B
 
PCM has failed
 

Trouble Code: P0850



Neutral switch input circuit problem

Possible Causes:



Neutral switch malfunction
 
Poor connection of neutral switch connector or PCM connector
 
Short to ground in wiring harness between neutral switch terminal A and PCM terminal 1S
 
Open circuit in wiring harness between ground and neutral switch terminal B
 
PCM has failed
 

Trouble Code: U0073



Data Circuit Malfunction

Possible Causes:



SCP data bus to other controller(s) is open or shorted to ground
 
A/C System controller is damaged or has failed
 
PCM has failed
 

 
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