P1435 Cadillac Code - Particulate Matter Sensor Control Module Temperature Sensors 1-2 Not Plausible
Quick Answer
The Particulate Matter (PM) sensor monitors the amount of the particulates (soot) in the diesel exhaust gas exiting the tailpipe. Common causes include Faulty Exhaust Particulate Matter Sensor, Exhaust Particulate Matter Sensor harness is open or shorted, Exhaust Particulate Matter Sensor circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- P1435 Cadillac indicates Particulate Matter Sensor Control Module Temperature Sensors 1-2 Not Plausible.
- Common causes
- Common causes include Faulty Exhaust Particulate Matter Sensor, Exhaust Particulate Matter Sensor harness is open or shorted, Exhaust Particulate Matter Sensor circuit poor electrical connection.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code P1435 Cadillac Description
The operation of the PM Sensor is based on the electrical conductivity characteristic of the diesel particulate. As the exhaust gas flows over the sensing element, soot is absorbed in the combs between the electrodes, eventually creating a conductive path. When the path is formed, it generates a current based on the voltage being applied to the element. The measurement process continues until a preset current value is reached. To avoid misleading readings, the sensor performs a regeneration where the soot is cleaned off by heating up the element before the measurement phase begins. The amount of regenerations is based on vehicle strategy; when the calibrated number of regenerations is reached, the cumulative current readings are used to determine the amount of soot concentration in the exhaust gas which in turn determines the collection efficiency of the Diesel Particulate Filter (DPF). The Diagnostic Trouble Code (DTC) when the Particular Matter Sensor Control Unit detects an internal electrical fault or an over-temperature condition on one of the internal temperature sensors.
What are the Possible Causes of the DTC P1435 Cadillac?
- Faulty Exhaust Particulate Matter Sensor
- Exhaust Particulate Matter Sensor harness is open or shorted
- Exhaust Particulate Matter Sensor circuit poor electrical connection
How to Fix the DTC P1435 Cadillac?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1435 Cadillac code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1435 Cadillac Code
What does the OBDII code P1435 mean on a Cadillac?
P1435 indicates an issue with the particulate matter sensor control module, specifically that the temperature readings from sensors 1 and 2 are not plausible or do not match expected values.
What are the symptoms of the P1435 code on a Cadillac?
Common symptoms include an illuminated check engine light and possibly reduced engine performance or increased emissions, but some vehicles may not show noticeable performance issues.
What causes the P1435 code to appear?
Possible causes include faulty particulate matter temperature sensors, wiring or connector issues, a malfunctioning particulate matter sensor control module, or software glitches in the engine control module.
Can the P1435 code cause damage if ignored?
While the code itself may not cause immediate damage, ignoring it could lead to higher emissions, reduced fuel efficiency, or further damage to the exhaust after-treatment system over time.
How can I diagnose the P1435 code on my Cadillac?
Diagnosis typically involves inspecting the particulate matter temperature sensors and their wiring for damage, testing the sensors for proper operation, and checking the control module for faults or updates.
Can I drive my Cadillac with the P1435 code active?
Driving with this code may not cause immediate issues, but it is not recommended as it could lead to increased emissions or additional problems with the exhaust system.
How much does it cost to fix the P1435 code on a Cadillac?
Repair costs vary, but replacing a faulty sensor might cost $200–$400, while addressing wiring or module issues could increase costs to $500 or more, depending on labor and parts.
Can a software update fix the P1435 code on a Cadillac?
In some cases, a software update for the engine control module or particulate matter sensor control module can resolve the issue if it is caused by a programming error.
Do I need to replace both temperature sensors to fix the P1435 code?
It is not always necessary to replace both sensors; a proper diagnosis will determine if one or both sensors are faulty or if the issue lies elsewhere.
What tools are needed to troubleshoot the P1435 code?
You will need an advanced OBDII scanner to read sensor data, a multimeter to test wiring and sensors, and possibly a repair manual or wiring diagram for your specific Cadillac model.
Discuss the causes and fixes for P1435 Cadillac OBDII Code
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