Error Code 27 ??

[fitzy2005]

Im getting error code 27 on my vr v6 auto along with error 75
ive triple checked the codes and i cannot find wot error 27 is.

Code 75 - System Voltage Low - Auto Transmission Only
Code 27 - ???????


Help Plz :s

(by the way alternator is **** itself so mite have to do with that not sure)

 

[Doctor Bob]

DTC 27 Transmission Fluid Pressure Switch Assembly (PSA) Circuit Fault, OPEN

 

[fitzy2005]

ok thanks for that, any idea how to fix?, asi have recently got a second hand gearbox fitted..

 

[fitzy2005]

and also where did you find that error code :S i coodnt find that any were

 

[Doctor Bob]

normally its the wiring harness in the trans, but it could be the PSA at fault
i dont have the diags here, someone may have a genuine workshop manual to copy it from.
i found it in a file on my puter.lol
Error Fault Description C.E Lamp?

12 No RPM Signal, normal when engine not running. NO
13 No O2 Sensor signal. YES
14 Engine Coolant Temp signal voltage too low. YES
15 Engine Coolant Temp signal voltage too high. YES
16 Engine Coolant Temp signal voltage unstable. YES
17 PCM error, ECT circuit. NO
19 Throttle Position Sensor stuck. YES
21 Throttle Position Sensor voltage high. YES
22 Throttle Position Sensor voltage low. YES
23 Manifold Air Temp Sensor signal voltage high. NO
24 No Vehicle Speed Sensor (VSS) - Automatic Trans. YES
25 Manifold Air Temp Sensor signal voltage low. NO
26 Manifold Air Temp Sensor signal voltage unstable. NO
27 Transmission Fluid Pressure Switch Assembly (PSA) Circuit Fault, OPEN YES
28 Transmission Fluid Pressure Switch Assembly (PSA) Circuit Fault, SHORT YES
31 Theft Deterrent Signal Missing. YES
33 MAP Sensor Voltage High YES
34 MAP Sensor Voltage Low YES
35 Idle Speed Error. NO
36 Vacuum Leak YES
41 Ignition Electronic Spark Timing (EST) Circuit Fault. YES
42 EST Bypass Circuit Fault. YES
43 Knock Sensor Circuit Fault. NO
44 Lean Exhaust . YES
45 Rich Exhaust. YES
46 No REF Pulses whilst Cranking. YES
47 18X Ref Signal Missing. NO
48 Camshaft Position Signal Missing. NO
49 Cam/Crank Signal Intermittent. NO
51 Memcal Error. YES
52 System Voltage Too High – Long Time. YES
53 System Voltage Too High. YES
54 System Voltage Unstable. YES
55 PCM – A/D Conversion Error. YES
56 Fuel Starvation under load YES
57 Injector Voltage Monitor Fault. NO
58 Transmission Fluid Temp (TFT) – Signal Voltage Too Low. NO
59 Transmission Fluid Temp (TFT) – Signal Voltage Too High. NO
66 3-2 Shift Control Solenoid Circuit Failure. NO
67 Torque Converter Clutch (TCC) Solenoid “ON”, or QDM2 Fault. YES
69 Torque Converter Clutch (TCC) Solenoid Stuck “ON”. NO
72 Vehicle Speed Signal (VSS) Intermittent. YES
73 Pressure Control Solenoid (PCS) Current Error. NO
75 System Voltage Low. YES
79 Transmission Fluid Temp (TFT) Too High. YES
81 2-3 Shift Solenoid “B” Circuit Failure. YES
82 1-2 Shift Solenoid “A” Circuit Failure. YES

 

[fitzy2005]

omg thanks, ill jack here up an check the wiring as i dont wonna spend any more on transmission stuff lol, is the PSA a big job?

 

[Doctor Bob]

its the valve assembly, not a huge job but the pan has to come off either way.

 

[fitzy2005]

ok not a big job, that sounds good , is this a fault that the auto shop could have caused fitting a gearbox? the gearbox was a second hand one i picked up. i owe the auto shop money still so yea..

 

[Doctor Bob]

only if it turns out they damaged the wiring unfortunately

 

[hako]

Wouldn't the first course of action be to replace the buggered alternator - it is probably giving an erratic charge rate which can trigger all sorts of faults.
From what I've seen, fault codes are merely a hint....not a definite fault locater.
Damaged wiring would be apparent from when it was damaged...not some time later IMHO.