F856 fault on rytec predadoor - Cars & Trucks

Clearing the codes is simple that is done by removing the fuse of the EFI from junction box 2 for 10 seconds. Make sure to remove the jumper wire and switch the key off before clearing the codes.

Here are some common Lexus vehicles 1990-1995 codes:

Code 12 and Code 13 Rpm signal circuit fault
Code 14 Igniter signal circuit fault
Code 16 ECT control signal fault
Code 21 and Code 28 Main oxygen sensor fault (for ES300; SC300 & GS300 models)
Code 22 Coolant temperature circuit fault
Code 24 Intake temperature sensor circuit fault
Code 25 and Code 26 Air fuel ratio fault (for ES300 & SC300 models)
Code 27 Sub-oxygen sensor circuit fault (for ES300 CA & GS300 models)
Code 31 Low airflow meter voltage (for ES300 and GS300 models)
Code 32 High airflow meter voltage (for ES300 model)
Code 35 Barometric pressure sensor circuit fault (for GS300 & SC300 models)
Code 41 and Code 47 Throttle position sensor circuit fault
Code 42 Vehicle speed sensor circuit fault
Code 43 Starter signal
Code 51 Switch condition signal fault (for ES300; GS300 & SC300 models)
Code 52 Code 52 and Code 55 Knock sensor circuit fault
Code 71 EGR system circuit fault (for ES300; GS300 & SC300 models)
Code 78 Fuel pump control circuit fault (for GS300 & SC300 models)

11 Oxygen sensor fault.
12 Airflow sensor fault.
13 Intake air temp sensor fault.
14 Throttle position sensor (TPS) fault.
15 Idle speed control (ISC) motor position sensor fault.
21 Coolant temp sensor fault.
22 Crankshaft position (CKP) sesnor fault.
23 Camshaft position (CMP) sensor fault.
24 Vehicle speed sensor (VSS) fault.
25 Barometric (BARO) pressure sensor fault.
31 Knock sensor fault.
32 MAP sensor faulty.
36 Ignition timing adjustment signal fault.
39 Oxygen (O2) sensor fault.
41 Injector(s) fault
42 Fuel pump fault.
43 EGR fault.
44 Ignition coil (cylinders #1 & #4) fault.
52 Ignition coil (cylinders #2 & #5) fault.
53 Ignition coil (cylinders #3 & #6) fault.
55 Idle air control (IAC) valve position sensor fault.
59 Rear Oxygen (O2) sesnor fault.
61 Transaxle control module torque reduction signal fault.
62 Variable Induction control (VIC) valve position sensor fault.
71 Traction control (TC) vacuum valve solenoid fault.
72 Traction Control (TC) vent valve solenoid fault.

The key to read the related information of fault codes and the fault code occurs when the car diagnostic tool records through the diagnostic instrument (usually contain frequency, fault fault, fault speed, speed, temperature, air pressure, the number of kilometers and so on), analysis of the causes of failure by these information. Some fault code does not cause the engine sound changes, such as the vehicle speed sensor fault, oxygen sensor failure etc.. You say are associated with oil or air filter fault may be fuel too thin / thick oil gas path fault, maintenance of this case can be resolved.

Hi there:
DTC P0520 Engine Oil Pressure Sensor/Switch Circuit Malfunction

If you decide to replace it and the code returns once cleared.....then you will need to run the entire test for this code:

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For a complete wiring diagram Refer to Section 8W.When Monitored:Ignition on, engine not running.Set Condition:The PCM senses the oil pressure is out of the calibrated range.Possible Causes(G6) ENGINE OIL PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGERESISTANCE (G6) ENGINE OIL PRESSURE SENSOR SIGNAL CIRCUIT(G6) ENGINE OIL PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO GROUNDRESISTANCE IN (F856) 5-VOLT SUPPLY CIRCUIT(F856) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUNDRESISTANCE IN THE (K900) SENSOR GROUND CIRCUITENGINE OIL PRESSURE SENSORPCMAlways perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Diagnostic Test1. ACTIVE DTC NOTE: Ensure that the engine oil is at the proper level. Also, check the customers oil change history to ensure that the oil is being changed at the correct intervals and that the proper oil viscosity is being used.
Ignition on, engine not running.With a scan tool, read DTCs.Is the DTC active at this time?YesGo To 2
NoRefer to the INTERMITTENT CONDITION Diagnostic Procedure.


2. (G6) ENGINE OIL PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE

Turn the ignition off.Disconnect the PCM harness connectors.Disconnect the Engine Oil Pressure Sensor harness connector. Ignition on, engine not running.Measure the voltage on the (G6) Engine Oil Pressure Signal circuit in the Engine Oil Pressure Sensor harness connector.Is the voltage above 0 volts?YesRepair the short to battery voltage in the (G6) Engine Oil Pressure Signal circuit.
NoGo To 3

3. ENGINE OIL PRESSURE SENSOR

Turn the ignition off.Connect the PCM harness connectors.Ignition on, engine not running.With a scan tool, monitor the Engine Oil Pressure Sensor voltage. Connect a jumper wire between the (K900) Sensor Ground circuit and the (G6) Engine Oil Pressure Signal circuit.NOTE: Engine Oil Pressure voltage should change from approximately 4.5 volts to less than 0.5 of a volt.Is the voltage reading within the listed specification when the jumper wire is installed?YesReplace the Engine Oil Pressure Sensor.
NoGo To 4NOTE: Remove the jumper wire before continuing.

4. EXCESSIVE RESISTANCE IN THE (G6) ENGINE OIL PRESSURE SIGNAL CIRCUIT

Turn the ignition off.Disconnect the PCM harness connectors.CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.
Measure the resistance of the (G6) Engine Oil Pressure Signal circuit from the Engine Oil Pressure Sensor harness connector to the appropriate terminal of special tool #8815.Is the resistance below 5.0 ohms for each circuit?YesGo To 5
NoRepair the excessive resistance in the (G6) Engine Oil Pressure Signal circuit.


5. (G6) ENGINE OIL PRESSURE SIGNAL CIRCUIT SHORTED TO GROUND


Measure the resistance between ground and the (G6) Engine Oil Pressure Signal circuit Engine Oil Pressure Sensor harness connector.Is the resistance below 100 ohms?YesRepair the short to ground in the (G6) Engine Oil Pressure Signal circuit.
NoGo To 6

6. EXCESSIVE RESISTANCE IN THE (F856) 5-VOLT SUPPLY CIRCUIT

Measure the resistance of the (F856) 5-volt Supply circuit from the Engine Oil Pressure Sensor harness connector to the appropriate terminal of special tool #8815.Is the resistance below 5.0 ohms?YesGo To 7
NoRepair the excessive resistance in the (F856) 5-volt Supply circuit.

7. (F856) 5-VOLT SUPPLY SHORTED TO GROUND

Measure the resistance between ground and the (F856) 5-volt Supply circuit in the Engine Oil Pressure Sensor harness connector.Is the resistance below 100 ohms?YesRepair the short to ground in the (F856) 5-volt Supply circuit.Perform the POWERTRAIN VERIFICATION TEST.
NoGo To 8

8. EXCESSIVE RESISTANCE IN THE (K900) SENSOR GROUND CIRCUIT

Measure the resistance of the (K900) Sensor Ground circuit from the Engine Oil Pressure Sensor harness connector to the appropriate terminal of special tool #8815.Is the resistance below 5.0 ohms?YesGo To 9
NoRepair the excessive resistance in the (K900) Sensor Ground circuit.Perform the POWERTRAIN VERIFICATION TEST.

9. PCMNOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits.Were there any problems found?YesRepair as necessary.Perform the POWERTRAIN VERIFICATION TEST.
NoReplace and program the Powertrain Control Module per Service Information.Perform the POWERTRAIN VERIFICATION TEST.

Hope this helps.

P0041 Oxygen Sensor Signals Swapped Bank 1 Sensor 2/Bank 2 Sensor 2
looks like your wires and melted together or a rodent has chewed them

All fault codes can be checked out at http://www.bluejag.co.uk but here are the results for some of yours. You can ignor P1111. Looks like a faulty plug or coil pack cylinder 2

Fault Code:- P1314 Indicates a Power-train fault


The fault is generally due to a problem in the Ignition or Misfire area


Fault Description: Misfire rate catalyst damage -bank 2 NOTE: This DTC will flag only when accompanied by an individual cylinder misfire DTC: P0300 - P0306

Action of ECM:- ECM Default:- Maximum engine speed reduced


After clearing the DTC, complete the Misfire monitor drive cycle
Check for a reoccurrence of fault DTC.

Possible Fault:- Cylinder compression low Worn camshaft / broken valve spring(s) Fuel delivery pressure (low / high) Fuel injector(s) restricted / leaking Fuel injector(s) continuously open Fuel contamination Fuel injector circuit fault(s) (Injector DTCs also flagged) Spark plug failure / fouled / incorrect gap ECM to ignition coil primary circuit fault (Cylinder misfire detected DTC also flagged) Ignition coil failure
Fault Code:- P1316 Indicates a Power-train fault


The fault is generally due to a problem in the Ignition or Misfire area


Fault Description: Misfire excess emission NOTE: This DTC will flag only when accompanied by an individual cylinder misfire DTC: P0300 - P0306

Action of ECM:- none


After clearing the DTC, complete the Misfire monitor drive cycle
Check for a reoccurrence of fault DTC.

Possible Fault:- Cylinder compression low Worn camshaft / broken valve spring(s) Fuel delivery pressure (low / high) Fuel injector(s) restricted / leaking Fuel injector(s) continuously open Fuel contamination Fuel injector circuit fault(s) (Injector DTCs also flagged) Spark plug failure / fouled / incorrect gap ECM to ignition coil primary circuit fault (Cylinder misfire detected DTC also flagged) Ignition coil failure

Fault Code:-
P0302 Indicates a Power-train fault


The fault is generally due to a problem in the Ignition or Misfire area


Fault Description: Misfire detected ?€" cylinder 2

Action of ECM:- none


After clearing the DTC, complete the Misfire monitor drive cycle
Check for a reoccurrence of fault DTC.

Possible Fault:- Refer to P0300 Possible Causes

SYMPTOM
P0404-EGR POSITION SENSOR PERFORMANCE

WHEN MONITORED
Engine running.

SET CONDITION
The EGR flow or valve movement is not what is expected.

POSSIBLE CAUSES
- Good trip equal to zero
- Excessive resistance in (F856) 5-volt supply
- (K34) EGR sensor signal circuit shorted to ground
- EGR assembly
- (K35) EGR solenoid control circuit
- Intermittent condition
- (K34) EGR sensor signal circuit open
- (K34) EGR sensor signal circuit shorted to ground
- (K900) sensor ground circuit open
- EGR assembly (ground)
- PCM
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ABS Fault Code List 1991 Corvette (C4)
Code Definition
21 Right Front Wheel Speed Sensor Fault
22 Right Front Toothed Wheel Frequency Error
25 Left Front Wheel Speed Sensor Fault
26 Left Front Toothed Wheel Frequency Error
31 Right Rear Wheel Speed Sensor Fault
32 Right Rear Toothed Wheel Frequency Error
35 Left Rear Wheel Speed Sensor Fault
36 Left Rear Toothed Wheel Frequency Error
41 Right Front Solenoid Valve Fault
45 Left Front Solenoid Valve Fault
55 Rear Wheels Solenoid Valve Fault
61 Pump Motor or Motor Relay Fault
63 Solenoid Valve Relay Fault
71 Electronic Brake Control Module Fault
72 Serial Data Line Fault
75 Lateral Accelerometer Fault (Short ot Open)
76 Lateral Accelerometer Fault (Signal out of Range)

1. VW VAG type 5 digit fault code 19497 = EOBD type P3041 fault code:
Fault location = CAN data bus, instrumentation - implausible Engine Coolant Temperature (ECT) signal
Probable cause = Wiring, matching resistor in Engine Control Module (ECM)

2. VW VAG type 5 digit fault code 18032 = EOBD type P1624 fault code:
Fault location = Malfunction Indicator Lamp (MIL) - request signal active
Probable cause = Trouble code(s) stored in other system(s)

3. VW VAG type 5 digit fault code 01039:
Fault location = Coolant Temperature Sensor (G2)
Probable cause = Open or Short to Plus, Short to Ground - Intermittent

4. VW VAG type 5 digit fault code 01304:
Fault location = Radio
Probable cause = No Communication

5. EOBD type P0761 fault code:
Fault location = Shift Solenoid C
Probable cause = Performance or Stuck OFF

1) ECM Fan Clutch 1) K160 18BR/OR Park Lockout Solenoid Control Green
1) BR / OR = Brown/Orange unit with Green
2) K900 18DB/DG Sensor Ground 2) Black
2) DB / DG = Dark Blue/Grak Green unit with Black
3) K161 18BR/LB Fan Speed Sensor White
3) BR / LB = Brown/Light Blue unit with White
4) Not Used
4) Not Used
5) F856 18YL/PK 5 Volt Supply Orange
5) YL/PK = Yellow/Pink unit with Orange
6) F504 20GY/PK Fused Ig. Sw. Output Red
6) GY/PK = Gray/Pink unit with Red
With this, you have 5 due color cables unit to the 5 full color cables. Run.

Good luck, and rated this help (and us chat).