I have code 998 hardfault mode ,how can i clear this code

The problem has to be repaired first. Is seems to be an electrical short or a defective part. It should be properly diagnosed & repaired & the computer cleared. Limp home mode is gone with the solved problem. DONT CHANGE PARTS THROUGH COMPUTER CODES.

122 is TP low (possibly grounded or open circuit) - TPS
that suggested it's not really the sensor itself is bad, but a wiring problem!

gotta trace and make sure the ground circuit and or wiring to that sensor is not broken

as for the other 3 digit code, no idea as well. reset the ecu/ecm and read the flashes again


Ford OBD Trouble Codes

You need to clear all the OBD 2 codes from the computer.
Has to be cleared with a OBD2 code reader

If your mechanic is clearing the code he should also be able to diagnose the code he is clearing. Your transmission is in safe mode or limp home. Take it to a shop that knows what they are doing

Dear Sir:
See the diagram attached: and proceed with troubleshooting VOM
God bless you

02 sensor shud be tested as well as some others since car is 20yrs--computer nay be failin--1st put it on a tech ll analyser that runs a data stream for precise solution and dont replace any parts until

antifreeze by the sound of it ,but it could be battery acid from a damaged battery casing

verify the code with a different scan tool,
if it is going in limp mode it should be a trans code

yes, go here for more help. There is a file on how to download codes and clear system.

The number of flashes is giving you a lamp fault code, LFC. What is it giving you?

http://autos.groups.yahoo.com/group/villagerquest/

Diagnostic Test Modes Without Scan Tool
Two mode options are available under the diagnostic test modes:

• user mode.
• diagnosis mode.

The ignition switch is used to alternate from one mode to another.
Diagnosis Mode
The diagnosis mode will display any fault present in the system. The SRS will not enter diagnosis mode if no malfunction is detected.
User Mode to Diagnosis Mode
NOTE: The SRS will not enter diagnosis mode if no fault is detected in user mode.

1. Ignition switch to ON.

1. After the air bag warning indicator lights for seven seconds, set ignition switch to OFF within one second.

1. Wait more than three seconds.

1. Repeat steps 1 through 3 three times.

1. Ignition switch to ON.

Diagnosis Mode to User Mode — After Repair

1. Ignition switch to OFF for at least one second.

1. Ignition switch to ON.

Diagnosis Mode to User Mode — During Diagnosis
NOTE: If switch from Diagnosis Mode to User Mode is required while diagnosing a fault, carry out the following procedure.

1. Ignition switch to ON.

1. After the air bag warning indicator lights for seven seconds, set ignition switch to OFF within one second.

1. Wait more than three seconds.

1. Repeat steps 1 through 3 three times.

1. Ignition switch to ON.

Clearing Lamp Fault Codes
NOTE: Lamp fault codes must be cleared from memory before proving out the system.
NOTE: When a new RCM is installed, the air bag warning indicator will operate in user mode. Switching to diagnosis mode is not required.
To clear lamp fault codes after a repair, carry out the procedure to switch from diagnosis mode to user mode. Once in the user mode, the lamp fault codes will be cleared from memory.
Lamp Fault Codes
If the air bag diagnostic monitor detects a current fault, the fault code will be displayed with a flashing sequence of the air bag indicator. The fault code consists of:

• A start signal to indicate the beginning of a fault code.
• A number of flashes indicating the particular code that has been set.

The start signal:

• begins with two seconds off.
• two seconds on.
• off.
• one second on.
• two seconds off.

Following the start signal, if any current fault is detected, the fault code will be displayed. The fault code:

• is a series of half second flashes of the air bag indicator.
• is followed by the start signal.

The start signal and the code for any current fault will repeat until the ignition is switched off or the air bag diagnostic monitor is switched to the user mode.
Inspection and Verification

1. Verify the customer concern by checking the air bag indicator in the instrument cluster. Refer to Prove Out in this section.

1. Visually inspect for obvious signs of mechanical and electrical damage using the following chart.

Visual Inspection Chart Mechanical Electrical

• Damaged air bag diagnostic monitor bracket

• Open fuse
• Damaged wiring harness
• Loose or corroded connectors
• Circuitry open or shorted
• Damaged shorting bars

1. If the concern is not visually evident, enter the system Diagnosis Mode.

1. If no DTCs are displayed in the Diagnosis Mode, proceed to the Symptom Chart in this section.

1. If DTCs are retrieved, proceed to the Air Bag Diagnostic Monitor Fault Code Table in this section.

Air Bag Diagnostic Monitor Fault Code Table Code Component/Fault Description 0 Normal Operation/No Fault Detected 1 Front Passenger Safety Belt Pretensioner 2 Driver Air Bag Module Circuit Is Faulted 3 Front Driver Safety Belt Pretensioner 7 Air Bag Diagnostic Monitor Fault 8 Passenger Air Bag Module Circuit Fault 9 Low Battery Voltage

Hi,

Error code 998 means .......Fault in ECT/ACT/MAF/TPR circuit.

follow the below link for more Information>>

http://www.troublecodes.net/Ford/eec-iv.shtml

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