P2E29

Q: Will P2E29 clear itself?

P2E29 is unlikely to clear itself permanently. Even if the check engine light turns off temporarily, the underlying issue typically remains and the code will return. Proper diagnosis and repair are recommended.

Moderate Severity (Level 3)

Drive Motor A Excitation Current Sensor Circuit Low Voltage

P2E29 usually means drive Motor A Excitation Current Sensor Circuit Low Voltage.

Can you still drive with P2E29?

⚠️Short-distance driving is usually OK, but have this diagnosed within a week to prevent further damage.

Typical repair cost: $80 – $1200

Severity Level 3 — Moderate

This code indicates a moderate issue that may affect vehicle performance and fuel economy. Continued driving is possible in most cases, but prompt diagnosis and repair are recommended to prevent further damage.

Common Symptoms

Check Engine Light illuminated
Engine performance reading zero or abnormally low
Diagnostic trouble code (DTC) stored in module memory
Fault may be intermittent — code may clear itself and reappear
Reduced vehicle functionality related to the powertrain/engine system

Possible Causes

Failed engine sensor or actuator — internal resistance has increased, outputting a signal lower than specification
Damaged wiring or corroded connector in the powertrain/engine system circuit introducing high resistance
Short to ground in the powertrain/engine system signal wire — wire chafed through, signal voltage pulled low
Loose or oxidized ground connection for the engine sensor or actuator — clean the ground and retest before replacing parts
Low system voltage (weak battery or failing alternator) causing sensor reference voltage to sag

Common Fixes

Scan vehicle with a professional-grade OBD2 scanner to read all stored codes and freeze frame data — note the conditions when the code set ($4-102 at shop, free at auto parts store for basic scan)
Visually inspect the powertrain/engine system wiring harness and connectors — look for chafed wires, melted insulation, green corrosion, loose pins, or rodent damage (often free to check yourself, $124 diagnostic fee at shop)
Test engine sensor or actuator with a multimeter at the connector — compare readings to factory service manual specs. If out of spec, replace engine sensor or actuator ($80-1200)
Check the reference voltage supply to engine sensor or actuator — should be steady 5V (or 12V) — if low, trace back to PCM/BCM voltage regulator ($126-318 if module repair needed)
Perform a voltage drop test on the ground side of the powertrain/engine system circuit — more than 0.1V drop means a bad ground that must be cleaned/repaired ($91-188 at shop)

Estimated Repair Cost

$80 – $1200(typical range; varies by vehicle make and model)

These are estimated costs based on generic repair data. Actual costs may vary depending on your vehicle, location, and labor rates.

Frequently Asked Questions

What does P2E29 mean?

P2E29 stands for "Drive Motor A Excitation Current Sensor Circuit Low Voltage". P2E29 usually means drive Motor A Excitation Current Sensor Circuit Low Voltage.

Can you drive with P2E29?

Short-distance driving is usually OK, but have this diagnosed within a week to prevent further damage.

How much does it cost to fix P2E29?

Repair costs for P2E29 typically range from $80 to $1200, depending on your vehicle make, model, and local labor rates. Common fixes include: Scan vehicle with a professional-grade OBD2 scanner to read all stored codes and freeze frame data — note the conditions when the code set ($4-102 at shop, free at auto parts store for basic scan); Visually inspect the powertrain/engine system wiring harness and connectors — look for chafed wires, melted insulation, green corrosion, loose pins, or rodent damage (often free to check yourself, $124 diagnostic fee at shop); Test engine sensor or actuator with a multimeter at the connector — compare readings to factory service manual specs. If out of spec, replace engine sensor or actuator ($80-1200).

Will P2E29 clear itself?

Related Repair Costs

Battery Replacement Cost

Explore Repair Costs

See all repair cost estimates Have a mechanic's quote? Verify it here

Related OBD-II Codes

These codes are in the same range as P2E29 and often share similar causes and fixes.

P0016— Crankshaft Position - Camshaft Position Correla...P0017— Crankshaft Position - Camshaft Position Correla...P0018— Crankshaft Position - Camshaft Position Correla...P0019— Crankshaft Position - Camshaft Position Correla...P0315— Crankshaft Position System Variation Not Learned

Worried about repair costs?

Get transparent estimates and verify your mechanic's quote before authorizing repairs.

Check your quote

Related Discussions

See what other car owners are saying about this code and related repairs.

View P2E29 discussions in the community