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2001 Other Jaguar Models Diagnostic Code

Tiny
KFLECK1
  • MEMBER
  • 2001 JAGUAR
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 78,000 MILES
I bought a used S-Type 3 1/2 yrs. Ago it had 22,000 miles. It now has 78,000 miles. I recently had the transmission rebuilt (among other things) and now I have a check engine light. The diagnostic code reads 1388 - Auto Shutdown Relay Circuit. I'm trying to exhaust all avenues before dumping another load of money into this car. I'm wondering if the following things could be causing this problem. 1) I've been alternating premium with mid-grade fuel b/c of escalating costs 2) My coolant reservoir has a slow leak - I keep it filled but haven't had it replaced yet. I've been told it could be just a sensor but they need to take the engine apart to find out. Is that necessary?
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Tuesday, July 1st, 2008 AT 2:10 PM

1 Reply

Tiny
DAVE H
  • MECHANIC
  • 13,384 POSTS
DTC P1388: BANK 2 VVT ACTUATOR OIL SUPPLY FAULT

Diagnostic Trouble Codes Description
Variable Valve Timing (VVT) over retarded (Bank 2). This DTC is set by the Engine Management System (EMS). This DTC is an OBD II fault. CHECK ENGINE light is activated after 2 consecutive trips with fault present. See DTC P1385, P1386 OR P1388: VVT MALFUNCTION (BANK 2) under DIAGNOSTIC TESTS.
Monitoring Conditions
This DTC is monitored with KOER. See KOER under SELF-TESTS. DTC is also monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.
System Default Action
None.
Possible Causes
Bank 2 VVT solenoid valve to PCM PWM drive circuit fault.
Bank 2 VVT actuator oil supply fault.
Bank 2 VVT actuator stuck.
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Saturday, October 31st, 2009 AT 6:43 AM

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