Fault Codes Corrections BOSCH Engine Management System (TB/03/98/NAS)
Publication date: 1998-12-23Reference number: TB/03/98/NAS
FAULT CODES CORRECTIONS BOSCH ENGINE MANAGEMENT SYSTEM
TECHNICAL SERVICE BULLETIN
| LAND ROVER: | 1999 Bosch Range Rover (LP); All Discovery (LT) |
| AFFECTED VEHICLES: | Model: Range Rover (LP) Model Year: 1999 Bosch; Model: Discovery (LT) Model Year: All |
| ISSUE: | 1 |
SITUATION
In some cases the code "P1000" appears stored in the Bosch engine management controller viewed with TestBook, when other codes should be displayed. This is the result of incorrect information on the Testbook CD. A number of other codes are also being displayed incorrectly. It is necessary when one of these codes is obtained to look at BOTH the P-code and the "Rover Reference" to determine what the correct code should be.
RESOLUTION
INTERPRETATION OF INCORRECT FAULT CODES
A table has been produced as a cross-reference to correct P-codes to assist in interpretation of the information contained in the various faults which give incorrect P-codes.
The "Rover Reference" must be read as a cross-reference to the correct descriptions and fault codes.
PARTS INFORMATION
NO PARTS ARE INVOLVED
WARRANTY CLAIMS
Normal warranty policy and procedures apply
PROCEDURE
DETERMINE THE UNDERLYING MEANING OF THE P1000 CODE
- Refer to Figure 1 and identify the "Rover Reference" code. Use this code to identify the underlying meaning of the "P1000" Code.
- When a "P1000" Code is found on TestBook, refer to the following table to interpret the underlying meaning of the code.
- If "P0122", "P0136", "P0144" or "P0177" display, refer to the following table for correct interpretation of the fault codes.
| Summary of Fault Code "P1000" Problems Known To Exist on TestBook For Bosch Motronic 5.2.1. Engine Management | ||||
|---|---|---|---|---|
| Current Testbook Output | ||||
| Code | Rover Reference | Description | Comments | Correct Code |
| P1000 | 108 | Voltage supply Interruption | This is the correct P-code. It does not illuminate MIL. |
|
| P1000 | 134 | Fuel Level Sensor (Below Minimum) | Range Rover only | P0462 |
| P1000 | 134 | Fuel Level Sensor (Above Maximum) | Range Rover only | P0463 |
| P1000 | 40 | Catalyst Deterioration, Bank A | P0420 | |
| P1000 | 45 | Catalyst Deterioration, Bank B | P0430 | |
| P1000 | 252 | ECM Cooling Fan B | Range Rover only | P1669 |
| P1000 | 97 | Evap System Monitoring - Small Leak | P0442 | |
| P1000 | 94 | Evap System Monitoring - Large Leak | P0455 | |
| P1000 | 39 | Immobiliser, Incorrect Code (Plausibility Fault) | No MIL illumination | P1672 |
| P1000 | 39 | Immobiliser, Incorrect Code (Below Minimum) | No MIL illumination | P1673 |
| P1000 | 39 | Immobiliser, Incorrect Code (Above Maximum) | No MIL illumination | P1674 |
| P1000 | 9 | MIL-Request from T-Box (Plausibility Fault) | Range Rover only | P1701 |
| P1000 | 9 | MIL-Request from T-Box (No Signal) | Range Rover only | P1702 |
| P1000 | 9 | MIL-Request from T-Box (Signal Below Min.) | Range Rover only | P1708 |
| P1000 | 9 | MIL-Request from T-Box (Signal Above Max.) | Range Rover only | P1703 |
| P0122 | 10 | O2 Sensor circuit high voltage, Pre-catalyst Bank A |
NOTE:
P0122 means: "Throttle position sensor circuit low input"
|
P0132 |
| P0136 | 10 | Lambda Sensor, Pre-Catalyst, Bank A (Plausibility Fault) |
NOTE:
P0136 means: "Oxygen sensor malfunction, bank 1, sensor 2"
|
P0130 |
| P0144 | 10 | Lambda Sensor, Pre-Catalyst, Bank A (No Signal) |
NOTE:
P0144 means: "Oxygen sensor circuit high voltage, bank 1 sensor 2"
|
P0134 |
| P0177 | 12 | Lambda Sensor, Post-Catalyst, Bank B |
NOTE:
P0177 means: "System too lean, bank 1"
|
P0157 |