AutoCodes – Cadillac – P10E2 Cadillac

P10E2 Cadillac Code - Ignition On/Start Circuit Source Bypass Relay Control Circuit Low Voltage

Quick Answer

The Engine Control Module (ECM) contains a microprocessor used to process input data to control outputs. Common causes include Faulty Engine Control Module Wake-Up Relay, Engine Control Module Wake-Up Relay harness is open or shorted, Engine Control Module Wake-Up Relay circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P10E2 Cadillac indicates Ignition On/Start Circuit Source Bypass Relay Control Circuit Low Voltage.
Common causes: Common causes include Faulty Engine Control Module Wake-Up Relay, Engine Control Module Wake-Up Relay harness is open or shorted, Engine Control Module Wake-Up Relay circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 551

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Aug 11, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P10E2 Cadillac Description

The Engine Control Module (ECM) contains a microprocessor used to process input data to control outputs. The control module controls a series of actuators to ensure optimal engine performance. The control module does this by reading values from a variety of sensors, interprets the data and adjusts the engine actuators accordingly. Relays are used to control a high-power circuit with a low power signal. The output circuit is switched to the ground to activate the component. The Diagnostic Trouble Code (DTC) will be set when the Control Circuit is short to ground for greater than 1 s.

OBDII Code P10E2 Cadillac - Ignition On/Start Circuit Source Bypass Relay Control Circuit Low Voltage - AutoCodes.com — P10E2 Cadillac Code - Ignition On/Start Circuit Source Bypass Relay Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P10E2 Cadillac?

Faulty Engine Control Module Wake-Up Relay
Engine Control Module Wake-Up Relay harness is open or shorted
Engine Control Module Wake-Up Relay circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P10E2 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 P10E2 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P10E2 Cadillac Code

What does the OBDII code P10E2 indicate for a Cadillac?

The P10E2 code indicates a problem with the "Ignition On/Start Circuit Source Bypass Relay Control Circuit," specifically a low voltage condition in the circuit.

What are common symptoms associated with the P10E2 code?

Common symptoms include difficulty starting the vehicle, the engine not cranking, or intermittent starting issues. The check engine light may also be illuminated.

What could cause the P10E2 code to trigger?

Causes can include a faulty bypass relay, damaged wiring or connectors, a weak battery, or issues with the ignition switch.

How can I diagnose the P10E2 code?

To diagnose the P10E2 code, start with a visual inspection of the wiring and connectors for damage. Then, test the bypass relay and check the voltage at the relay's terminals with a multimeter.

Is it safe to drive a vehicle with the P10E2 code?

While it may be possible to drive the vehicle, it's not recommended, as the starting problem could worsen, leaving you stranded.

What repairs are typically needed to fix the P10E2 code?

Repairs may include replacing the bypass relay, repairing damaged wiring, or replacing a faulty ignition switch, depending on the root cause of the issue.

Can a weak battery cause the P10E2 code?

Yes, a weak battery can cause low voltage in the circuit and trigger the P10E2 code, as the system may not receive sufficient power to operate correctly.

How can I prevent the P10E2 code from occurring in the future?

Regular maintenance, including checking the battery and electrical connections, can help prevent issues that may lead to the P10E2 code. Additionally, addressing any starting issues promptly can prevent further complications.

Should I clear the code after repairs?

Yes, after completing the necessary repairs, you should clear the code using an OBDII scanner and then monitor the system to ensure the code does not return.