B2159 "Memory #1 Output Short to ground

Supposedly blinking ac indicates ambient air sensor needs replaced ?????? no it doesn't ! Why don't you do yourself a favor an take it to a qualified repair shop that knows how to diagnose it correctly . Hooking up a factory or professional scan tool an checking for code's is the first thing to do. The way to know if a sensor has a malfunction is by A stored DTC - diagnostic trouble code .
DTC Descriptors
DTC B0158 02: Outside Air Temperature Sensor Circuit Short to Ground
DTC B0158 05: Outside Air Temperature Sensor Circuit Short to Battery or Open
DTC B0163 02: Passenger Compartment Temp Sensor 1 Circuit Short to Ground
DTC B0163 05: Passenger Compartment Temp Sensor 1 Circuit Short to Battery or Open
DTC B0168 02: Passenger Compartment Temp Sensor 2 Circuit Short to Ground
DTC B0168 05: Passenger Compartment Temp Sensor 2 Circuit Short to Battery or Open
DTC B0173 02: Output Air Temperature Sensor 1 Circuit Short to Ground
DTC B0173 05: Output Air Temperature Sensor 1 Circuit Short to Battery or Open
DTC B0178 02: Output Air Temperature Sensor 2 Circuit Short to Ground
DTC B0178 05: Output Air Temperature Sensor 2 Circuit Short to Battery or Open
DTC B0509 02: Output Air Temperature Sensor 3 Circuit Short to Ground
DTC B0509 05: Output Air Temperature Sensor 3 Circuit Short to Battery or Open
DTC B0514 02: Output Air Temperature Sensor 4 Circuit Short to Ground
DTC B0514 05: Output Air Temperature Sensor 4 Circuit Short to Battery or Open
DTC B3578 02: Output Air Temperature Sensor 6 Circuit Short to Ground
DTC B3578 05: Output Air Temperature Sensor 6 Circuit Short to Battery or Open
DTC B3583 02: Output Air Temperature Sensor 7 Circuit Short to Ground
DTC B3583 05: Output Air Temperature Sensor 7 Circuit Short to Battery or Open

Doesn't use a flasher .
Principles of Operation
The smart junction box (SJB) monitors the multifunction switch position by sending multiple voltage reference signals to the multifunction switch. When the multifunction switch is in the LH or RH TURN positions, or the hazard lamp switch is pressed, that input signal is routed to ground.
When the SJB receives a request for a turn signal or hazard lamps, the SJB supplies voltage to the appropriate turn lamps.
The timed on/off cycle is determined by the SJB and is set to flash approximately 80 times per minute if both the front and rear turn lamps operate correctly. If an individual turn signal lamp is inoperative, the SJB flashes the remaining turn lamp approximately 160 times per minute.
Field-Effect Transistor (FET) Protection
The SJB utilizes a FET protective circuit strategy for many of its outputs (for example, the headlamp output circuit). Output loads (current level) are monitored for excessive current (typically short circuits) and are shut down (turns off the voltage or ground provided by the module) when a fault is detected. A continuous DTC is stored at that time for the fault. The circuit will then reset after a customer demand of the function (switching the component on, 30-minute battery saver being energized). When an excessive circuit load occurs several times, the module shuts down the output until a repair procedure is carried out. At the same time, the continuous DTC that was stored on the first failure will not clear by a command to clear the continuous DTCs. The module will not allow this code to be cleared or the circuit restored to normal until a successful on-demand self-test proves that the fault has been repaired. After the on-demand self-test has successfully completed (no on-demand DTCs present), the continuous DTC will have been cleared and the circuit function will return.
The SJB FET protected output circuits for the turn lamp system are for the LH front turn lamp output and the RH front turn lamp output circuits. The rear turn lamps utilize the stoplamp circuitry and are also protected. For additional information regarding the rear lamps, refer to Stoplamps in this section.

Your best bet , take it to a qualified repair shop.

Inspection and Verification

1. Verify the customer concern.

1. Visually inspect the following for obvious signs of mechanical or electrical damage.

Visual Inspection Chart Mechanical Electrical

• Multifunction switch
• Hazard flasher lamp switch

• Smart junction box (SJB)
• Circuitry
• Bulbs

1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

NOTE: Make sure the headlamp switch is in the OFF position.
NOTE: Make sure the multifunction switch is in the LOW BEAM position.

1. NOTE: Make sure to use the latest scan tool software release. If the cause is not visually evident, connect the scan tool to the data link connector (DLC).

1. NOTE: The vehicle communication module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM. If the scan tool does not communicate with the VCM:
   • Check the VCM connection to the vehicle.
   • Check the scan tool connection to the VCM.
   • Refer to Section 418-00 , No Power To The Scan Tool, to diagnose no communication with the scan tool.

1. If the scan tool does not communicate with the vehicle:
   • Verify the ignition key is in the ON position.
   • Verify the scan tool operation with a known good vehicle.
   • Refer to Section 418-00 to diagnose no response from the powertrain control module (PCM).

1. Carry out the network test.
   • If the scan tool responds with no communication for one or more modules, refer to Section 418-00 .
   • If the network test passes, retrieve and record the continuous memory DTCs.

1. Clear the continuous DTCs and carry out the self-test diagnostics for the SJB.

1. If the DTCs retrieved are related to the concern, go to the Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Chart. For all other DTCs, refer to Section 419-10 .

1. If no DTCs related to the concern are retrieved, GO to Symptom Chart .

Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Chart DTC Description Action B2A27 Right Front Turn Lamp Circuit Open Go To Pinpoint Test M . B2A28 Right Front Turn Lamp Circuit Short to Ground Go To Pinpoint Test M . B2A29 Left Front Turn Lamp Circuit Open Go To Pinpoint Test M . B2A2A Left Front Turn Lamp Circuit Short to Ground Go To Pinpoint Test M . B2071 Hazard Switch Signal Short to Ground Go To Pinpoint Test N . B2281 Right Turn Switch Short to Ground Go To Pinpoint Test L . B2282 Left Turn Switch Short to Ground Go To Pinpoint Test L . All other DTCs - REFER to Section 419-10 .

B2159:Remote personalization output circuit short to battery

B2496: Horn relay output short to ground/open.
B2159:Remote personalization output circuit short to battery

Looks like Lambda sensor fault,

Fault Code:- P1646 Indicates a Power-train fault


The fault is generally due to a problem in the Computer & Output Circuit area


Fault Description: ECM HO2 Sensor control malfunction -bank 1 upstream (1/1)

Action of ECM:- ECM Default:- HO1S 1/1 control circuit inhibited


After clearing the DTC, complete the Drive vehicle for 10 minutes
Check for a reoccurrence of fault DTC.

Possible Fault:- HO2 Sensor 1/1 heater failure HO2 Sensor 1/1 sensing circuit: short circuit to ground, short circuit to high voltage, open circuit ECM Failure

See http://www.bluejag.co.uk for more info

Fault Code:- P1647 Indicates a Power-train fault


The fault is generally due to a problem in the Computer & Output Circuit area


Fault Description: ECM HO2 Sensor control malfunction -bank 2 upstream (2/1)

Action of ECM:- ECM Default:- HO2S 2/1 control circuit inhibited


After clearing the DTC, complete the Drive vehicle for 10 minutes
Check for a reoccurrence of fault DTC.

Possible Fault:- HO2 Sensor 2/1 heater failure HO2 Sensor 2/1 sensing circuit: short circuit to ground, short circuit to high voltage, open circuit ECM Failure

You can check out all fault codes at http://www.bluejag.co.uk

looks like faulty Lamda sensor.


Fault Code:- P1646 Indicates a Power-train fault


The fault is generally due to a problem in the Computer & Output Circuit area


Fault Description: ECM HO2 Sensor control malfunction -bank 1 upstream (1/1)

Action of ECM:- ECM Default:- HO1S 1/1 control circuit inhibited


After clearing the DTC, complete the Drive vehicle for 10 minutes
Check for a reoccurrence of fault DTC.

Possible Fault:- HO2 Sensor 1/1 heater failure HO2 Sensor 1/1 sensing circuit: short circuit to ground, short circuit to high voltage, open circuit ECM Failure

You can check out fault codes at http://www.bluejag.co.uk.
Looks like faulty Lamda Sensor.

Fault Code:- P1646 Indicates a Power-train fault


The fault is generally due to a problem in the Computer & Output Circuit area


Fault Description: ECM HO2 Sensor control malfunction -bank 1 upstream (1/1)

Action of ECM:- ECM Default:- HO1S 1/1 control circuit inhibited


After clearing the DTC, complete the Drive vehicle for 10 minutes
Check for a reoccurrence of fault DTC.

Possible Fault:- HO2 Sensor 1/1 heater failure HO2 Sensor 1/1 sensing circuit: short circuit to ground, short circuit to high voltage, open circuit ECM Failure

emissionwiz is right