PD1 Troubleshooting and Fault Diagnosis

This is a simple step-by-step process of elimination to correct performance issues with your PD1. Please be patient and follow the points below. Print this page and check off each point below for easy reference (see icon above).


 

When installing the PD1 please read and re-read the instructions in full. Failure to do so will result in a poor performing parking sensor. This is the most common problem when the product isn't working.


Please Note: Some customers choose to "test" the PD1 system by wiring it temporarily prior to installing permanently. This can on rare occasions give strange symptoms and cause errors due to movement in the twin antenna lead wiring. When you install as per the instructions (fixing the twin antenna to the body to prevent movement) this WILL NOT happen. Read on...


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PD1 ERROR CODES:

Front:

  • 2 Tones repeated 3 times. Antenna on bumper is not connected to ECU. Check twin wire connection at both ends.

Rear:

  • 2 Tones repeated 3 times. Antenna on bumper is not connected to ECU. Check twin wire connection at both ends.

Vision Rear:

  • The car logo on the LED Display illuminates red permanently and you get a warning code of a fast and continuous beeping and no colours on the LED display. Antenna on bumper is not connected to ECU. Check twin wire connection at both ends. or/ Lack of data (white wire) to the display unit due to incorrect connection.
  • The car logo on the LED Display illuminates red permanently and you don't hear a continuous beeping. This is a failure of the display unit. Replacement required.
  • The car logo on the LED Display illuminates red for a fraction of second without any beep. There is a problem with the connection between the display cable and ECU harness.

FAULTS & SOLUTIONS:

Before carrying out the following checks, please test your car with the engine stopped (to prevent any vibration) and test by using your hand moving close to the antenna/bumper. If the problem now stops, then the antenna and/or twin antenna wire installation is at fault. Please read on for this and more solutions...

The detection range changes and fluctuates continuously from 2 feet away from an object to really close.

1. This is due to the antenna twin wire moving when the car is in motion, or its within the detection range (i.e. run too close to the antenna on the bumper), or an object is close to the antenna.

Ensure the twin antenna wire is fixed to the car body to prevent movement and any excess on this twin wire (from ECU to antenna on bumper) is pulled into the car. This twin antenna wire must not enter the detection range area or false alarms can result. So check the path this wire takes and make it as short as possible to the ECU. Also see below for more solutions.

2.
And/or the metallic Antenna tape on the bumper has come unstuck at one or both ends. To fix, reattach the Metallic Antenna Tape and use the black mastic included with the PD1 kit at both ends or use a strong glue or very strong Gaffa or similar Tape.


I've installed the sensor following the instructions carefully but i get no sound when the sensor is activated?

1. Check that all electrical connections are good at the ECU end of the wiring. Then check the speaker connections at all ends of the speaker wire connections to ensure the speaker is operating correctly. If you have an ohm-meter, ensure the speaker is 30 ohms and not an open circuit.

2. Run an earth and 12V feed directly from the battery to the ECU to ensure these 2 connections are optimum. You should now get the 3 tone activation sound for the PD1 REAR and 1 tone for PD1 FRONT and PD1 VISION providing the speaker is connected.

3. Check connector that joins antenna twin wire is fully insulated from car bodywork. Use tape or heat shrink casing to insulate from bodywork.

Vision No Sound on activation of reverse gear:

1. Check the wires that connect into the LED Display. Test for 11 -12 V on the central unit connector between the pin with two black wires and the pin with a red wire. If this is OK then test if there is 11 -12 V between the red wire and the shield on the conjunctions made on the display. If the voltage is lower than 10 V here the system does not work properly.


I don't get the initial 3 diagnostic tones or they are very weak when i select reverse gear, activating the sensor?

Specifically check your earth connection and ensure it is connected directly to the body/chassis of the vehicle on a good earth point or to an earth wire.


I get the 3 activation tones but when reversing I don't get the first 2 alert tones, only the last (alert/stop) tone:

This occurs when the voltage is too low (below 8.5V PD1 REAR and PD1 FRONT) and (below 10.5V PD1 VISION). You need to check all connections including the earth and red wire.

Red Wire: Ensure it is soldered to the reverse light wire. To do this don't actually cut the wire, just use your snips/cutters to score a crease in the wire insulation only then use your snips to pull the casing back a bit on the wire to expose enough to attach and solder the red wire to, then insulate with tape.

Black Wire: Must be to car body (recommended) or to the earth wire of the rear light cluster for PD1 REAR and PD1 VISION.


PD1-Rear & PD1-Front Problems and Strange Symptoms:

1. Check the antenna connection between the twin antenna lead and the metallic antenna tape on your bumper. Ensure its a good strong connection and is insulated from the car body. Solder for optimum connection.

2. Check the metallic Antenna tape on the bumper hasn't come unstuck at one or both ends. To fix, reattach the antenna tape and use the black mastic included with the PD1 kit on both ends or use a strong glue or very strong Gaffa or similar Tape.

3. Ensure any excess on the twin wire (from ECU to antenna on bumper) is pulled into the car. This twin antenna wire must not enter the detection range area or false alarms can result. So check the path this wire takes and make it as short as possible to the ECU.

4. Ensure the twin antenna lead (from ECU to antenna on bumper) is NOT run through the rubber air valve present on some cars. This is because the air valves move and this movement passed onto the twin antenna wire will cause false alarms. It must run through a rubber grommet as per the instructions so the wire is static. The air valve is present to allow air out of the car when you slam the doors.

5. Ensure the twin antenna lead is fixed to the car body along its full length (using mastic) to prevent any movement.

6. Its recommended to run the twin antenna wire through a rubber grommet from within the car (ECU) to the outside of the car where it connects to the bumper (Antenna).

7. Ensure the antenna is free from mud or dirt that could short to the car body. Clean any traces of mud or dirt from the antenna that could be making a path to the car bodywork.

If you have covered the antenna with tape?

Remove this and clean up and remove any moisture and It's recommended (but not essential) to cover the antenna with a black anti-rust protection paint that is applied to the underneath of a car chassis or similar to protect from the elements.

8. Ensure the twin antenna lead (from ECU to antenna on bumper) is run separate from the live (red) and earth (black) wires and not taped or grouped together.

9. Ensure you have adhered to the Best Practices and also that the antenna isn't run too far onto the edges of the bumper. 20cm from the wheels minimum.

10. Ensure the ECU is located as per the installation instructions, videos and install slide shows close to the rear light cluster not in the centre of the car.


PD1-Vision Problems and Strange Symptoms:

1. Check the connections between the 5 metre cable and the display. If the wire connections are the wrong way around you'll get a continuous beep when the sensor is activated.

2. Check the antenna connection) between the twin antenna lead and the metallic antenna tape on your bumper. Ensure its a good strong connection and is insulated from the car body. Solder for optimum connection.

3. Check the metallic Antenna tape on the bumper hasn't come unstuck at one or both ends. To fix, reattach the antenna tape and use the black mastic included with the PD1 kit on both ends or use a strong glue or very strong Gaffa or similar Tape.

4. Ensure any excess on the twin wire (from ECU to antenna on bumper) is pulled into the car. This twin antenna wire must not enter the detection range area or false alarms can result. So check the path this wire takes and make it as short as possible to the ECU.

5. Ensure the twin antenna lead (from ECU to antenna on bumper) is NOT run through the rubber air valve present on some cars. This is because the air valves move and this movement passed onto the twin antenna wire will cause false alarms. It must run through a rubber grommet as per the instructions so the wire is static. The air valve is present to allow air out of the car when you slam the doors.

6. Ensure the twin antenna lead is fixed to the car body along its full length (using mastic) to prevent any movement.

7. Its recommended to run the twin antenna wire through a rubber grommet from within the car (ECU) to the outside of the car where it connects to the bumper (Antenna).

8. Ensure the antenna is free from mud or dirt that could short to the car body. Clean any traces of mud or dirt from the antenna that could be making a path to the car bodywork.

If you have covered the antenna with tape?

Remove this and clean up and remove any moisture and It's recommended (but not essential) to cover the antenna with a black anti-rust protection paint that is applied to the underneath of a car chassis or similar to protect from the elements.

9. Ensure the twin antenna lead (from ECU to antenna on bumper) is run separate from the live (red) and earth (black) wires and not taped or grouped together.

10. Ensure you have adhered to the Best Practices and also that the antenna isn't run too far onto the edges of the bumper. 20cm from the wheels minimum.

11. Ensure the ECU is located as per the installation instructions, videos and install slide shows close to the rear light cluster not in the centre of the car.


Sensor Detection range is way too short:

The antenna tape is within 3cm of horizontal metal objects such as the metal crash protection bar. You need to run 2 antennas in parallel to boost the detection range. Contact us for a 2nd antenna free of charge.

Read more here how to install 2 antennas.


I've broken the metallic antenna tape when installing.

You can try overlapping the antenna at the break and re-join. However we highly recommend replacing the antenna with a new one as the glue on the tape is a poor conductor, and this may now give low performance symptoms.


My sensor gives the odd false alarm of the first zone when reversing.

This is completely normal and to be expected and is simply due to the changes in ground surface height.


Operation in Heavy Rain conditions:

When heavy rain is present the PD1 parking sensor system automatically reduces its sensitivity in order to eliminate false alarms that can be given by the movement of water on the bumper. False signals in heavy rain conditions are highly affected by specific designs of vehicles and their bumpers. Some bumper designs have a higher chance of false alarms in heavy rain conditions.

False signals are given as a result of water flowing between the car body and the bumper. Parking Dynamics have reduced this as much as possible with good results within the PD1 software for optimum usage.

However once the software does recognise that water is present during a reversing manoeuvre the first and second zones are eliminated to prevent continuous false signals and the next alert zones are utilised until the system is reset and water eliminated.

This is intelligent in itself and surpasses ultrasonic's in such scenarios ensuring a safe and secure parking and reversing manoeuvre.



Installing the Parking Sensor Antenna on an irregular shaped bumper!

The Parking Dynamics PD1 sensor antenna is 1cm in height and offers limitless and flexible installations on front and rear bumpers of all shapes and sizes. The images below show that the antenna that mounts on the inner side of your bumper can fit an irregular shaped bumper without problems giving you optimum operation and total parking protection.

PD1 Parking Sensor Fits any shape bumper ensuring a flexible install PD1 Parking Sensor fits any shape or size of bumper for a flexible install
Antenna Installation

The Parking Dynamics PD1 sensor antenna is 1cm in height and offers limitless and flexible installations on front and rear bumpers of all shapes and sizes. You can install it as per the instructions so the connector is at the passenger side of the vehicle close to the light cluster to run the twin antenna from the ECU.

Antenna Installation

But also as below you can mount the terminal in the centre of the bumper. This is ideal for vehicles that have the wiring and the hole with a grommet to pass the twin antenna wire through in a central location. 

PD1 Antenna



Warning: Correct Routing of the Twin Antenna Wire Essential

Do NOT route the twin antenna wire through the Air Valve (if your car has one) as you will get many false alarms. The Air Valve (pictured below) is present to allow air out of the car when you slam the doors. If you route the wire through this air valve you will get movement on the twin wire and false alarms as a result.

Its recommended you run the twin antenna wire through a rubber grommet from within the car (ECU) to the outside of the car (pictured below) where it connects to the Antenna on the bumper. Also ensure the twin antenna lead is fixed to the car body along its full length (using mastic) to prevent any movement.
  

PD1 Antenna



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Testimonials

Customer Testimonials

I can't believe the ease by which the parking sensor was fitted and we just love the discrete 'hidden' sensor design. What a difference the PD1 makes to both mine and my wife's parking and reversing.

The audible alert keeps our attention to a maximum level and really helps with tight parking spaces.

Andy J

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