Hello .. thanks for the donation .. much appreciated
P0420...Catalyst Efficiency Below Threshold (Right Bank)
P0430...Catalyst Efficiency Below Threshold (Left Bank)
P1386...Variable Valve Timing Advanced (Left Bank)
P1388...Variable Valve Timing Retarded (Left Bank)
When I read the codes you had retrieved I was in 2 minds on what your fault was ? a bad CAT or VVT solonoid because the codes are indicating both left and right CAT faults .. i'm advising you to test the VVT solonoid first ..perform the following test and let me know the results ?
DTC P1385, P1386 OR P1388: VARIABLE VALVE TIMING SOLENOID (LEFT BANK)
Turn ignition off. Disconnect left Variable Valve Timing (VVT) solenoid harness connector.
Measure resistance between VVT solenoid terminals. If resistance is 5-20 ohms, go to next step. If resistance is not 5-20 ohms, replace VVT solenoid and retest system.
Turn ignition on. Measure voltage between ground and VVT Solenoid harness connector Green/White wire. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair power supply circuit and retest system.
Disconnect PCM harness connectors. See Fig. 8. Check continuity of White/Pink wire between VVT solenoid harness connector and PCM harness connector PI-1 terminal No. 10. See Fig. 9. If continuity exists, go to next step. If continuity does not exist, repair open in White/Pink wire and retest system.
Check continuity between ground and VVT solenoid harness connector White/Pink wire. If continuity exists, repair short to ground and retest system. If continuity does not exist, replace PCM and retest system.
hope this helps .. let me know
Tuesday, June 30th, 2009 AT 4:37 AM