L322 p0404 what is the cause - 2002 Land Rover Range Rover

P2066 relates to a fuel sensor level:
chrysler error code p2066 Google Search

P0404 relates to an EGR fault (Exhaust gas Recycler). You may be able to clean the EGR:
chrysler error code p2066 Google Search

Whether this is causing your battery to drain isn't clear - there are other causes of batteries discharging, such as burnt out diodes in the alternator.

Treat it as 3 faults - try and rectify the 2 error codes first (disconnect the car battery whe not in use to prevent it draining) .. and then look at the cause of the battery discharge

The P0513 is a bad immobilizer code, which is part of the security system. Apparently a bad code can cause the engine to run rough, which could be causing the other code. P0404 is an EGR code.

Error Code: P0404
Fault Location:
Exhaust Gas Recirculation (EGR) System - Range/Performance Problem
Causes:
-Hose leak/blockage.
-Wiring harness.
-Exhaust gas recirculation (EGR) valve/solenoid.
Error Code: P0473
Discription:
Exhaust Gas Pressure Sensor - High Input
Causes:
- Wiring short to positive.
- Exhaust gas pressure sensor (G450).
- Engine control module (ECM).
Error Code: P0674
Description:
Glow Plug Cylinder 4 Circuit - Circuit Malfunction
Causes:
-No Pre-Glow Period.
-Poor Cold Starting.
-Glow Plug Wiring faulty.
-Poor connection.
-Relay.
-Glow plug control module.
-Glow Plug faulty.
-Engine control module (ECM).
Solutions:
Check Glow Plug Wiring.
Check Glow Plug.
Error Code: P0675
Description:
Glow Plug Cylinder 5 Circuit - Circuit Malfunction
Causes:
-No Pre-Glow Period.
-Poor Cold Starting.
-Glow Plug Wiring faulty.
-Poor connection.
-Relay.
-Glow plug control module.
-Glow Plug faulty.
-Engine control module (ECM).
Solutions:
-Check Glow Plug Wiring.
-Check Glow Plug.

code p0404 refers to exhaust gas recirculation (EGR) valve position--range/performance problem ===causes --hose leakage/blockage--wiring ---EGR valve/solenoid
code p0420 refers to cat converter system bank 1-efficiency below threshold===causes --cat converter---wiring---HO2S 2

code p0404 refers to exhaust gas recirculation(EGR)-range/performance problem---Causes hose leak/blockage---wiring---EGR valve/solenoid I would go for the EGR valve /solenoid Replace the faulty units with genuine one because most aftermarket units are not set for OEM cpu units and are not completely compatible.

What engine does it have ? 2.2 or 3.4 L After looking at service info. you must have the 3.4 L engine ! 2.2 l has no code P0404
Do you see any connectors not plugged into anything , 5 wire's ?

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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The Solenoid fitted on the Steering Rack is not getting the command from The Body Control Unit. Kindly Replace your BCM and then your problem is solved. You can try to make sure by giving direct current of 12v to the solenoid and check the Steering. if it works then simply change the BCM as it's not giving d command to the Solenoid. Salman EiD

The code definition is "Exhaust gas recirculation control circuit range/performance" found a forum online that may have some helpful info for you http://forum.chryslerminivan.net/showthread.php?t=8397

P0404 EGR valve problem
Change the Exhaust Gas Recirculation valve.
This valve puts some of the exhaust gas back into the engine to cool combustion (to reduce spark knock) and lowers HC (emissions).